ci: fix OOM crashes and stylua auth error

.forgejo/workflows/ci.yml

@@ -8,6 +8,8 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
+  CARGO_BUILD_JOBS: 1
+  CMAKE_BUILD_PARALLEL_LEVEL: 1
 
 jobs:
   rust-lint:
@@ -68,13 +70,11 @@ jobs:
       - uses: https://github.com/actions/checkout@v4
 
       - name: Check Lua Formatting
-        uses: https://github.com/JohnnyMorganz/stylua-action@v4
-        env:
-          GITHUB_API_URL: https://api.github.com
-        with:
-          token: ''
-          version: latest
-          args: --check assets/scripts/ mods/
+        run: |
+          curl -L -o stylua.zip https://github.com/JohnnyMorganz/StyLua/releases/latest/download/stylua-linux-x86_64.zip
+          unzip stylua.zip
+          chmod +x stylua
+          ./stylua --check assets/scripts/ mods/
 
       - name: Run Selene
         run: ./.forgejo/scripts/run-selene.sh