ci(deps): bump the actions group across 1 directory with 2 updates

Bumps the actions group with 2 updates in the / directory: [actions/checkout](https://github.com/actions/checkout) and [actions/cache](https://github.com/actions/cache).


Updates `actions/checkout` from 4 to 7
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](https://github.com/actions/checkout/compare/v4...v7)

Updates `actions/cache` from 4.3.0 to 6.1.0
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](https://github.com/actions/cache/compare/0057852bfaa89a56745cba8c7296529d2fc39830...55cc8345863c7cc4c66a329aec7e433d2d1c52a9)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: 6.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
...

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

.github/workflows/keymap.yml

@@ -27,7 +27,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Checkout test fonts
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           repository: storytold/craft-fonts
           ref: b076417b5880bd4154bd22f00695b1d28c6bea83
@@ -65,7 +65,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Checkout test fonts
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           repository: storytold/craft-fonts
           ref: b076417b5880bd4154bd22f00695b1d28c6bea83