Test multiple static SDK and wasm SDK versions

Author: jrflat

.github/workflows/pull_request.yml

@@ -33,6 +33,9 @@ jobs:
         swift package init --type library
         swift build
       enable_windows_docker: true
+      # TODO: jflat - Remove after PR testing
+      linux_static_sdk_versions: "[\"6.0\", \"6.1\", \"nightly-main\", \"nightly-6.2\"]"
+      wasm_sdk_versions: "[\"nightly-main\", \"nightly-6.2\"]"
 
   tests_without_docker:
     name: Test without Docker