chore(ci): use github.head_ref instead of .ref for concurrency

.projenrc.ts

@@ -35,6 +35,7 @@ const project = new ConstructLibraryCdktf({
   repositoryUrl: "https://github.com/cdktf/cdktf-multi-stack-tfe.git",
   description: `Sets up TFE / TFC workspaces for all stacks based on a seed stack.`,
   jsiiVersion: "~5.2.0",
+  typescriptVersion: "~5.2.0", // should always be the same major/minor as JSII
   licensed: false,
   prettier: true,
   projenrcTs: true,

projenrc/auto-approve.ts

@@ -21,6 +21,9 @@ export class AutoApprove {
       },
     });
 
+    (workflow.concurrency as any) =
+      "${{ github.workflow }}-${{ github.head_ref }}";
+
     const maintainerStatuses = `fromJSON('["OWNER", "MEMBER", "COLLABORATOR"]')`;
     workflow.addJobs({
       approve: {

projenrc/automerge.ts

@@ -27,7 +27,8 @@ export class Automerge {
       },
     });
 
-    (workflow.concurrency as any) = "${{ github.workflow }}-${{ github.ref }}";
+    (workflow.concurrency as any) =
+      "${{ github.workflow }}-${{ github.head_ref }}";
 
     const maintainerStatuses = `fromJSON('["OWNER", "MEMBER", "COLLABORATOR"]')`;
     workflow.addJobs({