Bump actions/checkout from 6 to 7

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/autochangelog.yml

@@ -17,7 +17,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           ref: master
 

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: paths-filter
         uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d
         id: filter
@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-24.04
     needs: pre_flight
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Ensure +x on CI directory
         run: chmod -R +x ./tools/ci
       - name: Install Tools
@@ -53,7 +53,7 @@ jobs:
     needs: pre_flight
     if: needs.pre_flight.outputs.dm == 'true'
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Cache SpacemanDMM
         uses: actions/cache@v5
@@ -83,7 +83,7 @@ jobs:
     needs: pre_flight
     if: needs.pre_flight.outputs.dm == 'true'
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Ensure +x on CI directory
         run: |