modernize github actions workflow, bump to a supported version

Signed-off-by: Joe Fitzgerald <jfitzgerald@vmware.com>

.github/workflows/go.yml

@@ -1,21 +1,19 @@
-name: Go
-
-on:
-  push:
-    branches: [master]
-  pull_request:
-    branches: [master]
-
+name: Build and Test
+on: [push, pull_request]
 jobs:
   build:
+    name: Build
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go: ["stable", "oldstable"]
     steps:
       - uses: actions/checkout@v2
 
       - name: Set up Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: ${{ matrix.go }}
 
       - name: Build and Test
         run: ./scripts/ci.sh

go.mod

@@ -16,4 +16,4 @@ require (
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
-go 1.17
+go 1.19