ci: update Go version and add Fyne dependencies

- Upgrade Go version from 1.20 to 1.21
- Add installation of Fyne dependencies (libgl1-mesa-dev, xorg-dev)
- Improve formatting of workflow file

Author: devlifeX

.github/workflows/go.yml

@@ -5,24 +5,28 @@ name: Go
 
 on:
   push:
-    branches: [ "master" ]
+    branches: ["master"]
   pull_request:
-    branches: [ "master" ]
+    branches: ["master"]
 
 jobs:
-
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+      - uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: "1.21"
 
-    - name: Set up Go
-      uses: actions/setup-go@v4
-      with:
-        go-version: '1.20'
+      - name: Install Fyne Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libgl1-mesa-dev xorg-dev
 
-    - name: Build
-      run: go build -v ./...
+      - name: Build
+        run: go build -v ./...
 
-    - name: Test
-      run: go test -v ./...
+      - name: Test
+        run: go test -v ./...