chore(go): bump project version number to 1.21

.github/workflows/browser-testing.yml

@@ -40,7 +40,7 @@ jobs:
 
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: '1.21'
           cache: true
 
       - name: Install Google Chrome

.github/workflows/go-lint.yml

@@ -28,7 +28,7 @@ jobs:
 
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: '1.21'
           cache: true
       - uses: actions/checkout@v4
       - name: golangci-lint

.github/workflows/go-tests.yaml

@@ -12,7 +12,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.19.x, 1.20.x]
+        go-version: [1.20.x, 1.21.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:

.github/workflows/hls-tests.yml

@@ -27,7 +27,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: '1.21'
           cache: true
 
       - name: Cache node modules

.github/workflows/screenshots.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: '1.21'
           cache: true
 
       - name: Cache node modules