Test matrix (#86)

* test low/mid/high

Author: benjaminjb

.github/workflows/test.yaml

@@ -25,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        kubernetes: [v1.27, v1.26, v1.25, v1.24, v1.23, v1.22, v1.21]
+        kubernetes: [v1.27, v1.24, v1.21]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3