Bump actions/checkout from 5 to 6 (#1760)

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/checks.yml

@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           lfs: false
       - name: Cache tox

.github/workflows/docs.yml

@@ -31,7 +31,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           lfs: true
       - name: Cache tox

.github/workflows/run-on-comment.yml

@@ -115,7 +115,7 @@ jobs:
           return pr.head.sha;
 
     - name: Checkout SHA
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         lfs: true
         ref: ${{ steps.sha.outputs.result }}

.github/workflows/run-profiling.yaml

@@ -112,7 +112,7 @@ jobs:
     timeout-minutes: 8640
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.sha }}
           lfs: true

.github/workflows/tests-unpinned.yml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           lfs: true
       - name: Cache tox

.github/workflows/tests.yml

@@ -38,7 +38,7 @@ jobs:
     outputs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           # No tests should be under LFS so no need to fetch LFS files
           lfs: false
@@ -64,7 +64,7 @@ jobs:
       fail-fast: false
       matrix: ${{ fromJson(needs.gen-test-matrix.outputs.matrix) }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           lfs: true
       - name: System info