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

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
       - uses: ./.github/actions/set_up_runner
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
@@ -39,7 +39,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
       - uses: ./.github/actions/set_up_runner
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/move_major_ver_tag_on_release.yml

@@ -18,7 +18,7 @@ jobs:
       # branches and tags. This is important if the workflow is launched via
       # workspace_dispatch event. It ensures that we can find the release tag
       # and the major version tag.
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
         with:
           # Fetch all history for all branches and tags
           fetch-depth: 0