Reduce size limit for ccache to 200 MB

- also evicts cache files that untouched during the job run
- see #301

Author: mrbean-bremen

.github/workflows/build.yml

@@ -55,6 +55,8 @@ jobs:
       uses: hendrikmuhs/ccache-action@v1.2.18
       with:
          key: ${{ runner.os }}-ubuntu-${{ matrix.container_version }} 
+         max-size: "200M"
+         evict-old-files: 'job'
 
     - name: Build PythonQt
       run: |
@@ -214,6 +216,8 @@ jobs:
       uses: hendrikmuhs/ccache-action@v1.2.18
       with:
          key: ${{ runner.os }}-${{ matrix.qt-version }} 
+         max-size: "200M"
+         evict-old-files: 'job'
 
     - name: Detect exact versions
       id : versions

.github/workflows/build_latest.yml

@@ -50,6 +50,8 @@ jobs:
       uses: hendrikmuhs/ccache-action@v1.2.18
       with:
          key: ${{ runner.os }}-${{ matrix.qt-version }}
+         max-size: "200M"
+         evict-old-files: 'job'
       if: ${{ matrix.os == 'ubuntu' }}
 
     - name: Set environment