build(deps): bump seanmiddleditch/gha-setup-ninja from 5 to 6 (#138)

Bumps [seanmiddleditch/gha-setup-ninja](https://github.com/seanmiddleditch/gha-setup-ninja) from 5 to 6.
- [Release notes](https://github.com/seanmiddleditch/gha-setup-ninja/releases)
- [Commits](seanmiddleditch/gha-setup-ninja@96bed6e...3b1f8f9)

---
updated-dependencies:
- dependency-name: seanmiddleditch/gha-setup-ninja
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Daan Timmer <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -53,7 +53,7 @@ jobs:
         with:
           key: ${{ github.job }}
           max-size: 2G
-      - uses: seanmiddleditch/gha-setup-ninja@96bed6edff20d1dd61ecff9b75cc519d516e6401 # v5
+      - uses: seanmiddleditch/gha-setup-ninja@3b1f8f94a2f8254bd26914c4ab9474d4f0015f67 # v6
       - uses: lukka/run-cmake@af1be47fd7c933593f687731bc6fdbee024d3ff4 # v10.8
         with:
           configurePreset: "Host"