ci: add Golang 1.17 to version matrix

Author: andrzej-stencel

.github/workflows/pull_requests.yml

@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        go: [ '1.16', '1.15', '1.14' ]
+        go: [ '1.17', '1.16', '1.15', '1.14' ]
     steps:
       - uses: actions/[email protected]
       - name: Setup go