Commit e6c56bd6 for libheif

commit e6c56bd62376b08e8bb5423d2df1e493630b2508
Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Date:   Wed Jun 24 13:22:22 2026 +0000

    Bump actions/cache from 5 to 6

    Bumps [actions/cache](https://github.com/actions/cache) from 5 to 6.
    - [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/v5...v6)

    ---
    updated-dependencies:
    - dependency-name: actions/cache
      dependency-version: '6'
      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 3e942c86..7b2b6ede 100644
--- a/.github/workflows/coverity.yml
+++ b/.github/workflows/coverity.yml
@@ -23,7 +23,7 @@ jobs:
     - uses: actions/checkout@v6

     - name: Cache Coverity build tool
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       with:
         path: |
           coverity_tool.tar.gz