Bump actions/checkout from 5 to 6 (#2264)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci_gz_physics.yml

@@ -49,7 +49,7 @@ jobs:
       CMAKE_BUILD_PARALLEL_LEVEL: 1
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup pixi
         uses: prefix-dev/setup-pixi@v0.9.3

.github/workflows/ci_macos.yml

@@ -44,7 +44,7 @@ jobs:
     runs-on: macos-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Ensure pixi home exists
         run: mkdir -p "${HOME}/.pixi/bin"
@@ -95,7 +95,7 @@ jobs:
     # Run Debug builds on every push/PR so regressions are caught before landing on main
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Ensure pixi home exists
         run: mkdir -p "${HOME}/.pixi/bin"

.github/workflows/ci_ubuntu.yml

@@ -49,7 +49,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Remove stale pixi binary
         run: rm -f "$HOME/.pixi/bin/pixi"
@@ -108,7 +108,7 @@ jobs:
       DART_PARALLEL_JOBS: 8
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Remove preinstalled pixi (if any)
         run: rm -f "$HOME/.pixi/bin/pixi"
@@ -171,7 +171,7 @@ jobs:
     # Run Debug builds on every push/PR so regressions are caught before landing on main
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Remove preinstalled pixi (if any)
         run: rm -f "$HOME/.pixi/bin/pixi"

.github/workflows/ci_windows.yml

@@ -48,7 +48,7 @@ jobs:
         build_type: ["Release"] # TODO: Add Debug
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup pixi
         uses: prefix-dev/setup-pixi@v0.9.3

.github/workflows/codeql.yml

@@ -61,7 +61,7 @@ jobs:
             gui: "ON"
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup pixi
         uses: prefix-dev/setup-pixi@v0.9.3

.github/workflows/publish_dartpy.yml

@@ -73,7 +73,7 @@ jobs:
             skip-on-commit: true
           # Windows builds temporarily disabled
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         if: (matrix.skip-on-commit != true) || github.event_name == 'pull_request' || startsWith(github.ref, 'refs/tags/v')
 
       - name: Prepare pixi home

.github/workflows/update_lockfiles.yml

@@ -21,7 +21,7 @@ jobs:
       matrix:
         base: [main, release-6.16]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ matrix.base }}
       - name: Set up pixi