Update github checkout action and go versions

.github/workflows/go.yml

 name: Go
+
 on: [push, pull_request]
-jobs:
 
+jobs:
   build:
     name: Build
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
+        go: ['1.13', '1.x']
         os: [ubuntu-latest, macos-latest, windows-latest]
-
     steps:
-
-    - name: Set up Go
+    - name: Setup Go
       uses: actions/setup-go@v1
       with:
-        go-version: 1.x
-
-    - name: Set up env
+        go-version: ${{ matrix.go }}
+    - name: Setup env
       run: |
         echo "::set-env name=GOPATH::$(go env GOPATH)"
         echo "::add-path::$(go env GOPATH)/bin"
       shell: bash
-
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
       with:
         fetch-depth: 1
-
     - name: Cache Go modules
       uses: actions/cache@v1
       with:
@@ -36,19 +33,14 @@ jobs:
           ${{ runner.OS }}-build-${{ env.cache-name }}-
           ${{ runner.OS }}-build-
           ${{ runner.OS }}-
-
-    - name: Set up GolangCI-Lint
+    - name: Setup GolangCI-Lint
       run: go get -u github.com/golangci/golangci-lint/cmd/golangci-lint
       working-directory: ~
-
     - name: Lint
       run: make lint
-
     - name: Vet
       run: make vet
-
     - name: Build
       run: make build
-
     - name: Test
       run: make test

.github/workflows/release.yaml

@@ -11,15 +11,12 @@ jobs:
   goreleaser:
     runs-on: ubuntu-latest
     steps:
-
-      - name: Checkout
-        uses: actions/checkout@v1
-
       - name: Set up Go
         uses: actions/setup-go@v1
         with:
-          go-version: 1.x
-
+          go-version: '1.13'
+      - name: Checkout
+        uses: actions/checkout@v2
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v1
         with: