ci: move to github actions runner

Author: MarcoPolo

.github/workflows/go-test-template.yml

@@ -25,7 +25,7 @@ jobs:
       GOTESTFLAGS: -cover -coverprofile=module-coverage.txt -coverpkg=./...
       GO386FLAGS: ""
       GORACEFLAGS: ""
-    runs-on: ${{ fromJSON(vars[format('UCI_GO_TEST_RUNNER_{0}', matrix.os)] || format('"{0}-latest"', matrix.os)) }}
+    runs-on: ${{ format("{0}-latest", matrix.os) }}
     name: ${{ matrix.os }} (go ${{ matrix.go }})
     steps:
       - name: Use msys2 on windows

.github/workflows/interop-test.yml

@@ -23,7 +23,7 @@ on:
 jobs:
   run-transport-interop:
     name: Run transport interoperability tests
-    runs-on: ${{ fromJSON(vars['INTEROP_TEST_RUNNER_UBUNTU'] || '"ubuntu-22.04"') }}
+    runs-on: ${{ "ubuntu-22.04" }}
     steps:
       - name: Free Disk Space (Ubuntu)
         if: vars['INTEROP_TEST_RUNNER_UBUNTU'] == ''