Bump the all-github-actions group with 2 updates (#98)

Bumps the all-github-actions group with 2 updates: [julia-actions/cache](https://github.com/julia-actions/cache) and [codecov/codecov-action](https://github.com/codecov/codecov-action).


Updates `julia-actions/cache` from 2 to 3
- [Release notes](https://github.com/julia-actions/cache/releases)
- [Commits](julia-actions/cache@v2...v3)

Updates `codecov/codecov-action` from 5 to 6
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v5...v6)

---
updated-dependencies:
- dependency-name: julia-actions/cache
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-github-actions
- dependency-name: codecov/codecov-action
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Hendrik Ranocha <ranocha@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/Documenter.yml

@@ -30,7 +30,7 @@ jobs:
         with:
           version: '1.10'
           show-versioninfo: true
-      - uses: julia-actions/cache@v2
+      - uses: julia-actions/cache@v3
       - uses: julia-actions/julia-buildpkg@v1
         env:
           PYTHON: ""

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: julia-actions/cache@v2
+      - uses: julia-actions/cache@v3
       - uses: julia-actions/julia-buildpkg@v1
         env:
           PYTHON: ""
@@ -63,7 +63,7 @@ jobs:
           flag-name: run-${{ matrix.os }}-${{ matrix.version }}-${{ matrix.arch }}
           parallel: true
           path-to-lcov: ./lcov.info
-      - uses: codecov/codecov-action@v5
+      - uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
           files: ./lcov.info # optional