chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/build-postgres-cache.yml

@@ -41,7 +41,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set PostgreSQL version
         id: version
@@ -104,7 +104,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set PostgreSQL version
         id: version

.github/workflows/build-test-native.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up Python
       uses: actions/setup-python@v6
@@ -71,7 +71,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up Python
       uses: actions/setup-python@v6

.github/workflows/build-test-with-docker.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
@@ -43,7 +43,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Download Docker image artifact
       uses: actions/download-artifact@v6
@@ -148,7 +148,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Download Docker image artifact
       uses: actions/download-artifact@v6

.github/workflows/conformance-tests.yml

@@ -31,7 +31,7 @@ jobs:
       # - Security requirements (PKCE, algorithms, etc.)
 
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Get Conformance Suite Latest Tag
         id: conformance-tag
@@ -58,7 +58,7 @@ jobs:
       
       - name: Checkout OIDC Conformance Suite
         if: steps.check-image.outputs.exists == 'false'
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: openid-certification/conformance-suite
           path: tck/conformance-suite
@@ -106,7 +106,7 @@ jobs:
           cache-to: type=gha,mode=max
 
       - name: Checkout Conformance Suite Resources
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: openid-certification/conformance-suite
           path: tck/conformance-suite

.github/workflows/full-stack-test-with-docker.yml

@@ -34,7 +34,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
@@ -88,7 +88,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Download Docker image artifact
       uses: actions/download-artifact@v6

.github/workflows/release-pypi.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Validate tag format
       run: |
@@ -64,7 +64,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up Python
       uses: actions/setup-python@v6
@@ -130,7 +130,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up Python
       uses: actions/setup-python@v6
@@ -217,7 +217,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Download wheel artifact
       uses: actions/download-artifact@v6
@@ -285,7 +285,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3