build: Test against Go 1.20

Author: dajohi

.github/workflows/go.yml

@@ -9,14 +9,14 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [1.18, 1.19]
+        go: ["1.19", "1.20"]
     steps:
       - name: Set up Go
-        uses: actions/setup-go@84cbf8094393cdc5fe1fe1671ff2647332956b1a #v3.2.1
+        uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 #v3.5.0
         with:
           go-version: ${{ matrix.go }}
       - name: Check out source
-        uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 #v3.1.0
+        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c #v3.3.0
       - name: Build
         run: go build ./...
       - name: Test