Update default python version of workflows to 3.9

.github/workflows/benchmark_nightly.yml

@@ -24,10 +24,10 @@ jobs:
           cd ..
           pwd
           rm -rf _tool
-      - name: Setup Python 3.8
-        uses: actions/setup-python@v4
+      - name: Setup Python 3.9
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
           architecture: x64
       - name: Setup Java 17
         uses: actions/setup-java@v3

.github/workflows/ci_cpu.yml

@@ -27,12 +27,12 @@ jobs:
         if: matrix.os == 'macos-14'
         uses: actions/setup-python@v5
         with:
-          python-version: '3.10' 
+          python-version: '3.10'
       - name: Setup Python for all other OS
         if: matrix.os != 'macos-14'
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
           architecture: x64
       - name: Setup Java 17
         uses: actions/setup-java@v3

.github/workflows/ci_gpu.yml

@@ -27,10 +27,10 @@ jobs:
           # deletes all hidden files in a directory
           sudo rm -rf ./.??* || true
           ls -la ./
-      - name: Setup Python 3.8
-        uses: actions/setup-python@v4
+      - name: Setup Python 3.9
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
           architecture: x64
       - name: Setup Java 17
         uses: actions/setup-java@v3

.github/workflows/codeql.yml

@@ -36,11 +36,11 @@ jobs:
       uses: actions/checkout@v3
       with:
         submodules: recursive
-      
-    - name: Setup Python 3.8
-      uses: actions/setup-python@v4
+
+    - name: Setup Python 3.9
+      uses: actions/setup-python@v5
       with:
-        python-version: 3.8
+        python-version: 3.9
         architecture: x64
     - name: Setup Java 17
       uses: actions/setup-java@v3

.github/workflows/doc-automation.yml

@@ -8,10 +8,10 @@ jobs:
   build_docs_job:
     runs-on: ubuntu-20.04
     steps:
-    - name: Setup Python 3.8
-      uses: actions/setup-python@v4
+    - name: Setup Python 3.9
+      uses: actions/setup-python@v5
       with:
-        python-version: 3.8
+        python-version: 3.9
         architecture: x64
     - name: Checkout
       uses: actions/checkout@v3

.github/workflows/docker-nightly-build.yml

@@ -15,10 +15,10 @@ jobs:
           sudo rm -rf ./* || true
           sudo rm -rf ./.??* || true
           ls -la ./
-      - name: Setup Python 3.8
-        uses: actions/setup-python@v4
+      - name: Setup Python 3.9
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
           architecture: x64
       - name: Checkout TorchServe
         uses: actions/checkout@v3

.github/workflows/kserve_cpu_tests.yml

@@ -24,10 +24,10 @@ jobs:
           curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
           sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
           echo "/usr/local/bin" >> $GITHUB_PATH
-      - name: Setup Python 3.8
-        uses: actions/setup-python@v4
+      - name: Setup Python 3.9
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
           architecture: x64
       - name: Install grpcurl
         run: |

.github/workflows/lint.yml

@@ -14,10 +14,10 @@ jobs:
   mypy:
     runs-on: ubuntu-20.04
     steps:
-      - name: Setup Python 3.8
-        uses: actions/setup-python@v4
+      - name: Setup Python 3.9
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
           architecture: x64
       - name: Checkout TorchServe
         uses: actions/checkout@v3

.github/workflows/official_release_docker.yml

@@ -25,10 +25,10 @@ jobs:
           sudo rm -rf ./* || true
           sudo rm -rf ./.??* || true
           ls -la ./
-      - name: Setup Python 3.8
-        uses: actions/setup-python@v4
+      - name: Setup Python 3.9
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
           architecture: x64
       - name: Checkout TorchServe
         uses: actions/checkout@v3

.github/workflows/regression_tests_cpu.yml

@@ -26,12 +26,12 @@ jobs:
         if: matrix.os == 'macos-14'
         uses: actions/setup-python@v5
         with:
-          python-version: '3.10' 
+          python-version: '3.10'
       - name: Setup Python for all other OS
         if: matrix.os != 'macos-14'
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
           architecture: x64
       - name: Setup Java 17
         uses: actions/setup-java@v3

.github/workflows/regression_tests_gpu.yml

@@ -30,10 +30,10 @@ jobs:
         run: sudo add-apt-repository ppa:git-core/ppa -y && sudo apt-get update && sudo apt-get install git -y
       - name: Check git version
         run: git --version
-      - name: Setup Python 3.8
-        uses: actions/setup-python@v3
+      - name: Setup Python 3.9
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
           architecture: x64
       - name: Setup Java 17
         uses: actions/setup-java@v3