Bump the official group with 2 updates (#9)

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


Updates `actions/checkout` from 4 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v6)

Updates `actions/cache` from 4 to 5
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: official
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: official
...

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/deno-ci.yml

@@ -22,15 +22,15 @@ jobs:
 
     steps:
     - name: Checkout source
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Use Deno ${{ matrix.deno-version }}
       uses: denoland/setup-deno@v2
       with:
         deno-version: ${{ matrix.deno-version }}
 
     - name: Cache Deno deps
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cache/deno
         key: denodir/${{ matrix.deno-version }}-${{ hashFiles('deno.lock') }}
@@ -62,12 +62,12 @@ jobs:
     if: github.event_name == 'push'
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - uses: denoland/setup-deno@v2
 
     - name: Cache Deno deps
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.cache/deno
         key: denodir-${{ hashFiles('deno.lock') }}