task: add tests against 1.19 (#305)

Author: gssbzn

.github/workflows/pr.yml

@@ -27,9 +27,9 @@ jobs:
     strategy:
       matrix:
         golang:
-          - 1.16
           - 1.17
           - 1.18
+          - 1.19
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3