Upgrade to actions/checkout@v6

Closes gh-48267

Author: wilkinsona

.github/actions/update-homebrew-tap/action.yml

@@ -11,7 +11,7 @@ runs:
   using: composite
   steps:
     - name: Check Out Homebrew Tap Repo
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         path: updated-homebrew-tap-repo
         repository: spring-io/homebrew-tap

.github/workflows/build-and-deploy-snapshot.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ${{ vars.UBUNTU_MEDIUM || 'ubuntu-latest' }}
     steps:
       - name: Check Out Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build and Publish
         id: build-and-publish
         uses: ./.github/actions/build

.github/workflows/build-pull-request.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ${{ vars.UBUNTU_MEDIUM || 'ubuntu-latest' }}
     steps:
       - name: Check Out Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build
         id: build
         uses: ./.github/actions/build

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
           git config --global core.longPaths true
           Stop-Service -name Docker
       - name: Check Out Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build
         id: build
         uses: ./.github/actions/build

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ vars.UBUNTU_MEDIUM || 'ubuntu-latest' }}
     steps:
       - name: Check Out Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build and Publish
         id: build-and-publish
         uses: ./.github/actions/build
@@ -71,7 +71,7 @@ jobs:
     runs-on: ${{ vars.UBUNTU_SMALL || 'ubuntu-latest' }}
     steps:
       - name: Check Out Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Sync to Maven Central
         uses: ./.github/actions/sync-to-maven-central
         with:
@@ -105,7 +105,7 @@ jobs:
     runs-on: ${{ vars.UBUNTU_SMALL || 'ubuntu-latest' }}
     steps:
       - name: Check Out Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Publish
         uses: ./.github/actions/publish-gradle-plugin
         with:
@@ -122,7 +122,7 @@ jobs:
     runs-on: ${{ vars.UBUNTU_SMALL || 'ubuntu-latest' }}
     steps:
       - name: Check Out Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Publish to SDKMAN!
         uses: ./.github/actions/publish-to-sdkman
         with:
@@ -138,7 +138,7 @@ jobs:
     runs-on: ${{ vars.UBUNTU_SMALL || 'ubuntu-latest' }}
     steps:
       - name: Check Out Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Update Homebrew Tap
         uses: ./.github/actions/update-homebrew-tap
         with:
@@ -169,7 +169,7 @@ jobs:
     runs-on: ${{ vars.UBUNTU_SMALL || 'ubuntu-latest' }}
     steps:
       - name: Check Out Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Create GitHub Release
         uses: ./.github/actions/create-github-release
         with:

.github/workflows/run-system-tests.yml

@@ -19,7 +19,7 @@ jobs:
             toolchain: true
     steps:
       - name: Check Out Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Prepare Gradle Build
         uses: ./.github/actions/prepare-gradle-build
         with:

.github/workflows/trigger-docs-build.yml

@@ -22,7 +22,7 @@ jobs:
       actions: write
     steps:
     - name: Check Out
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         ref: docs-build
     - name: Trigger Workflow

.github/workflows/verify.yml

@@ -38,13 +38,13 @@ jobs:
     runs-on: ${{ vars.UBUNTU_SMALL || 'ubuntu-latest' }}
     steps:
       - name: Check Out Release Verification Tests
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: 'v0.0.14'
           repository: spring-projects/spring-boot-release-verification
           token: ${{ secrets.token }}
       - name: Check Out Send Notification Action
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: send-notification
           sparse-checkout: .github/actions/send-notification