Merge pull request monero-project#9723

b2140b6 ci: Parallelize Arch Linux build (iamamyth)

Author: tobtoht

.github/workflows/build.yml

@@ -92,8 +92,9 @@ jobs:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
+      - uses: ./.github/actions/set-make-job-count
       - name: build
-        run: ${{env.BUILD_DEFAULT_LINUX}}
+        run: ${{env.BUILD_DEFAULT_LINUX}} --parallel ${{env.MAKE_JOB_COUNT}}
 
   build-debian:
     name: 'Debian 10'