Bump seanmiddleditch/gha-setup-ninja from 4 to 6 in the actions group

Bumps the actions group with 1 update: [seanmiddleditch/gha-setup-ninja](https://github.com/seanmiddleditch/gha-setup-ninja).


Updates `seanmiddleditch/gha-setup-ninja` from 4 to 6
- [Release notes](https://github.com/seanmiddleditch/gha-setup-ninja/releases)
- [Commits](seanmiddleditch/gha-setup-ninja@v4...v6)

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

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

Author: dependabot[bot]

Diff for: .github/workflows/build.yml

@@ -64,7 +64,7 @@ jobs:
 
       - name: Install Ninja (Linux / MacOS)
         if: ${{ matrix.os == 'ubuntu-latest' || matrix.os == 'macos-latest' }}
-        uses: seanmiddleditch/gha-setup-ninja@v4
+        uses: seanmiddleditch/gha-setup-ninja@v6
 
       - name: Fetch IDA SDKs (Linux / MacOS)
         if: ${{ (matrix.os == 'ubuntu-latest' || matrix.os == 'macos-latest') && steps.cache-sdk.outputs.cache-hit != 'true' }}