Build: 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] <[email protected]>

Author: dependabot[bot]

.github/workflows/autobuild.yml

@@ -318,7 +318,7 @@ jobs:
 
       - name:                       Cache Mac dependencies
         if:                         matrix.config.target_os == 'macos'
-        uses:                       actions/cache@v4
+        uses:                       actions/cache@v5
         with:
           path: |
             ~/qt
@@ -327,7 +327,7 @@ jobs:
 
       - name:                       Cache Windows dependencies
         if:                         matrix.config.target_os == 'windows'
-        uses:                       actions/cache@v4
+        uses:                       actions/cache@v5
         with:
           path: |
             C:\Qt
@@ -339,7 +339,7 @@ jobs:
 
       - name:                       Cache Android dependencies
         if:                         matrix.config.target_os == 'android'
-        uses:                       actions/cache@v4
+        uses:                       actions/cache@v5
         with:
           path: |
             /opt/Qt