Bump actions/cache from 4 to 5

Bumps [actions/cache](https://github.com/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/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

action.yml

@@ -56,7 +56,7 @@ runs:
     - name: Mount devbox cli cache
       if: inputs.refresh-cli == 'false'
       id: cache-devbox-cli
-      uses: actions/cache/restore@v4
+      uses: actions/cache/restore@v5
       with:
         path: ~/.local/bin/devbox
         key: ${{ runner.os }}-${{ runner.arch }}-devbox-cli-${{ env.latest_version }}
@@ -105,7 +105,7 @@ runs:
 
     - name: Save devbox cli cache
       if: inputs.refresh-cli == 'false' && steps.cache-devbox-cli.outputs.cache-hit != 'true'
-      uses: actions/cache/save@v4
+      uses: actions/cache/save@v5
       with:
         path: ~/.local/bin/devbox
         key: ${{ runner.os }}-${{ runner.arch }}-devbox-cli-${{ env.latest_version }}
@@ -159,7 +159,7 @@ runs:
     - name: Mount nix store cache
       id: cache-devbox-nix-store
       if: inputs.enable-cache == 'true'
-      uses: actions/cache/restore@v4
+      uses: actions/cache/restore@v5
       with:
         path: |
           ~/.cache/devbox
@@ -187,7 +187,7 @@ runs:
 
     - name: Save nix store cache
       if: inputs.enable-cache == 'true' && steps.cache-devbox-nix-store.outputs.cache-hit != 'true'
-      uses: actions/cache/save@v4
+      uses: actions/cache/save@v5
       with:
         path: |
           ~/.cache/devbox