Forgejo Action: Run just check.

.forgejo/workflows/ci.yml

@@ -18,6 +18,8 @@ jobs:
       with:
         toolchain: stable
         components: "clippy, rustfmt"
+    - name: Install Clang
+      uses: https://github.com/egor-tensin/setup-clang@v1
     - name: Rust Cache
       uses: https://github.com/Swatinem/rust-cache@v2
     
@@ -33,6 +35,6 @@ jobs:
         cd frontend
         npm ci
     
-    - run: apt install just clang
+    - run: apt install just
     - name: Run just check
       run: just check