Bump hendrikmuhs/ccache-action from 1.2.20 to 1.2.21

Bumps [hendrikmuhs/ccache-action](https://github.com/hendrikmuhs/ccache-action) from 1.2.20 to 1.2.21.
- [Release notes](https://github.com/hendrikmuhs/ccache-action/releases)
- [Commits](hendrikmuhs/ccache-action@v1.2.20...v1.2.21)

---
updated-dependencies:
- dependency-name: hendrikmuhs/ccache-action
  dependency-version: 1.2.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/docs.yml

@@ -43,7 +43,7 @@ jobs:
 
         # re-use the cache from the linux build
       - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.20
+        uses: hendrikmuhs/ccache-action@v1.2.21
         with:
           key: ${{ runner.os }}-${{ env.BUILD_TYPE }}
 

.github/workflows/keyvi.yml

@@ -55,7 +55,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.20
+        uses: hendrikmuhs/ccache-action@v1.2.21
         with:
           key: ${{ matrix.os }}-${{ matrix.type }}
 

.github/workflows/python-cibuildwheel.yml

@@ -47,7 +47,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: ccache
-        uses: hendrikmuhs/ccache-action@v1.2.20
+        uses: hendrikmuhs/ccache-action@v1.2.21
         with:
           key: ${{ matrix.os }}-${{ matrix.target }}-${{ matrix.flavor }}-python
 
@@ -142,7 +142,7 @@ jobs:
         sudo apt-get update && \
         sudo apt-get install -y libsnappy-dev libzzip-dev zlib1g-dev libboost-all-dev ccache
     - name: ccache
-      uses: hendrikmuhs/ccache-action@v1.2.20
+      uses: hendrikmuhs/ccache-action@v1.2.21
       with:
         key: ubuntu-sdist-python