chore: update all dependencies to v6 (#693)

Author: renovate-bot

.github/workflows/build-shared-spanner-lib.yml

@@ -25,10 +25,10 @@ jobs:
             target: windows
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: ${{ matrix.go-version }}
         cache: true

.github/workflows/python-spanner-lib-wrapper-lint.yml

@@ -22,10 +22,10 @@ jobs:
         working-directory: spannerlib/wrappers/spannerlib-python/spannerlib-python
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: '3.10'
         cache: 'pip'

.github/workflows/python-spanner-lib-wrapper-system-tests.yml

@@ -22,15 +22,15 @@ jobs:
         working-directory: spannerlib/wrappers/spannerlib-python/spannerlib-python
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: '1.25.x'
 
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}
         cache: 'pip'

.github/workflows/python-spanner-lib-wrapper-unit-tests.yml

@@ -18,15 +18,15 @@ jobs:
         working-directory: spannerlib/wrappers/spannerlib-python/spannerlib-python
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: '1.25.x'
 
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: '3.10'
         cache: 'pip'

.github/workflows/release-python-spanner-lib-wrapper.yml

@@ -23,7 +23,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Download Shared Library Artifacts
         uses: actions/download-artifact@v4 
@@ -42,7 +42,7 @@ jobs:
           ls -R spannerlib/wrappers/spannerlib-python/spannerlib-python/google/cloud/spannerlib/internal/lib
       
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: '3.10'
           cache: 'pip'

.github/workflows/release-spannermockserver.yml

@@ -19,10 +19,10 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: "3.10"