[internal] Update GitHub Actions workflow files

scripts/get-versions.sh

@@ -5,12 +5,7 @@ set -euo pipefail
 # e.g. go list -m -f '{{.GoVersion}}'
 
 module_path="github.com/pulumi/pulumi/pkg/v3"
-go_mod_path="."
+gomod="./go.mod"
-gomod="go.mod"
-
-if [[ "$go_mod_path" != "" && "$go_mod_path" != "." ]]; then
-  gomod="$go_mod_path/$gomod"
-fi
 
 if [[ ! -f "$gomod" ]]; then
   echo "missing $gomod" >&2