misc: update actions/checkout to v5

Author: laxa1986

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     environment: release
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Release
         uses: agilecustoms/release@main

README.md

@@ -22,7 +22,7 @@ jobs:
       contents: read # required for actions/checkout
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Java
         uses: agilecustoms/setup-maven-codeartifact@v1
@@ -123,7 +123,7 @@ jobs:
       contents: read # required for actions/checkout
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Proxy with a secret
         id: proxy