Bump hendrikmuhs/ccache-action from 1.2.12 to 1.2.13

Bumps [hendrikmuhs/ccache-action](https://github.com/hendrikmuhs/ccache-action) from 1.2.12 to 1.2.13.
- [Release notes](https://github.com/hendrikmuhs/ccache-action/releases)
- [Commits](hendrikmuhs/ccache-action@v1.2.12...v1.2.13)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/quantlib-risks.yml

@@ -75,7 +75,7 @@ jobs:
             brew install ninja
             brew install ccache
       - name: ccache
-        uses: hendrikmuhs/[email protected].12
+        uses: hendrikmuhs/[email protected].13
         with:
             key: ${{ matrix.buildplat }}-${{ matrix.python }}
             variant: ${{ matrix.ccache }}