Update test workflow

Author: roeldev

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.20.x, 1.19.x, 1.18.x, 1.17.x, 1.16.x, 1.15.x, 1.14.x, 1.13.x]
+        go-version: ["stable", "oldstable", 1.19.x, 1.18.x, 1.17.x, 1.16.x, 1.15.x, 1.14.x, 1.13.x]
         platform: [ubuntu-latest, macos-latest, windows-latest]
 
     runs-on: ${{ matrix.platform }}