Commit 4c94fc67 for libheif

commit 4c94fc6786f1d2dbf5ab16798552a5fcf7248ddd
Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Date:   Fri Dec 12 13:01:55 2025 +0000

    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](https://github.com/actions/cache/compare/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>

diff --git a/.github/workflows/coverity.yml b/.github/workflows/coverity.yml
index 245d6d18..13005a4c 100644
--- a/.github/workflows/coverity.yml
+++ b/.github/workflows/coverity.yml
@@ -19,7 +19,7 @@ jobs:
     - uses: actions/checkout@v6

     - name: Cache Coverity build tool
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: |
           coverity_tool.tar.gz