github: Bump Go versions

Author: bep

.github/workflows/test.yml

@@ -7,7 +7,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.20.x, 1.21.x]
+        go-version: [1.21.x, 1.22.x]
         platform: [ubuntu-latest, macos-latest, windows-latest]
         package: [passthrough]
     runs-on: ${{ matrix.platform }}