Remove quotes from versions

.github/workflows/go.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        go: ['1.13', '1.x']
+        go: [1.13, 1.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
     - name: Setup Go

.github/workflows/release.yaml

@@ -14,7 +14,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v1
         with:
-          go-version: '1.13'
+          go-version: 1.13
       - name: Checkout
         uses: actions/checkout@v2
       - name: Run GoReleaser