Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/diffy.yml

@@ -11,7 +11,7 @@ jobs:
     name: Shellcheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.2.2
+      - uses: actions/checkout@v5.0.0
       - name: Run ShellCheck
         uses: ludeeus/action-shellcheck@master
 
@@ -21,7 +21,7 @@ jobs:
     needs: shellcheck
     steps:
       - name: Check out our own code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       #    - name: Cache base diff environment
       #      id: base-diff
       #      uses: actions/cache@v3
@@ -44,26 +44,26 @@ jobs:
         run: npm -g install diff2html-cli diff2html
 
       - name: Checkout HA core
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: home-assistant/core
           path: clones/beta/ha-core
       - name: Checkout Plugwise fork of HA core
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: plugwise/home-assistant.core
           ssh-key: ${{ secrets.hacore_deploykey }}
           path: clones/beta/pw-core
           fetch-depth: 0
       - name: Checkout beta component (branch-switch)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: plugwise/plugwise-beta
           ssh-key: ${{ secrets.plugwise_deploykey }}
           path: clones/beta/beta
           fetch-depth: 0
       - name: Checkout beta component (main-branch)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: plugwise/plugwise-beta
           ref: main
@@ -83,27 +83,27 @@ jobs:
         run: scripts/diffy.sh beta
 
       - name: Checkout HA core for usb-beta
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: home-assistant/core
           path: clones/usb-beta/ha-core
       - name: Checkout Plugwise fork of HA core for usb-beta
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: plugwise/home-assistant.core
           ssh-key: ${{ secrets.hacore_deploykey }}
           path: clones/usb-beta/pw-core
           fetch-depth: 0
       - name: Checkout usb-beta component (branch-switch)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: plugwise/plugwise_usb-beta
           ssh-key: ${{ secrets.plugwise_deploykey }}
           path: clones/usb-beta/usb-beta
           fetch-depth: 0
 
       - name: Checkout usb-beta component (main-branch)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: plugwise/plugwise_usb-beta
           ref: main