chore: fix gha

Author: eugene1g

.github/workflows/validate-oldnode.yml

@@ -10,8 +10,6 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
-          - "22.6" # earliest in LTS that natively supports --experimental-strip-types
-          - "22.x" # latest LTS
           - "23.x" # Latest current
 
     steps: