Update CI

Signed-off-by: Alberto Tudela <[email protected]>

.github/workflows/build.yml

@@ -31,7 +31,7 @@ jobs:
         uses: actions/cache/restore@v4
         with:
           path: ${{ env.MIRA_PATH }}
-          key: mira-${{ runner.os }}-${{ github.sha }}
+          key: mira-${{ runner.os }}-ubuntu-22.04
       # - name: Make ccache directory
       #   run: mkdir -p ${{ env.CCACHE_DIR }}
       # - name: Cache ccache