ci: use older Windows for Go 1.19 tests (#2250)

Use windows-2019 runner when testing Go 1.19, since the windows-2022 image
has an incompatible C toolchain which breaks some of our tests.

(cherry picked from commit b4cc9ed)

.github/workflows/multios-unit-tests.yml

@@ -20,7 +20,7 @@ on:
 
 jobs:
   test-multi-os:
-    runs-on: ${{ inputs.runs-on }}
+    runs-on: "${{ (inputs.go-version == '1.19' && inputs.runs-on == 'windows-latest') && 'windows-2019' || inputs.runs-on }}"
     env:
       REPORT: gotestsum-report.xml # path to where test results will be saved
     steps: