fix: github workflow

.github/workflows/build.yml

@@ -13,6 +13,8 @@ jobs:
     steps:
       - name: Setup | Checkout
         uses: actions/checkout@v2
+      - name: Install GTK4 dependencies
+        run: apt-get install -y libgtk-4-dev
       - name: Setup | Rust
         uses: ATiltedTree/setup-rust@v1
         with:
@@ -26,6 +28,8 @@ jobs:
     steps:
       - name: Setup | Checkout
         uses: actions/checkout@v2
+      - name: Install GTK4 dependencies
+        run: apt-get install -y libgtk-4-dev
       - name: Setup | Rust
         uses: ATiltedTree/setup-rust@v1
         with:
@@ -34,20 +38,16 @@ jobs:
         run: cargo check
   test:
     name: Test
-    strategy:
-      matrix:
-        rust:
-          - stable
-          - beta
-          - nightly
     runs-on: ubuntu-latest
     needs: [compile]
     steps:
       - name: Setup | Checkout
         uses: actions/checkout@v2
+      - name: Install GTK4 dependencies
+        run: apt-get install -y libgtk-4-dev
       - name: Setup | Rust
         uses: ATiltedTree/setup-rust@v1
         with:
-          rust-version: ${{ matrix.rust }}
+          rust-version: stable
       - name: Build | Compile
         run: cargo test