fix: assigning issues permission error (#187)

Assign issues to charm tech members and mention interface maintainers in the issue body.

run_matrix.py

@@ -357,18 +357,24 @@ def create_issue(
 ):
     gh = Github(os.getenv("GITHUB_TOKEN"))
     repo = gh.get_repo("canonical/charm-relation-interfaces")
+    issue_assignees = ["IronCore864", "tonyandrewmeyer"]
     workflow_url = ""
     github_run_id = os.getenv("GITHUB_RUN_ID")
     if github_run_id:
         workflow_url = f"https://github.com/canonical/charm-relation-interfaces/actions/runs/{github_run_id}"
     result = flatten_test_result(result_per_role)
     title = f"Interface test for {interface} {version} failed."
+    mention_team_members = ", ".join(
+        ["@" + member for member in get_team_members_from_team_slug(maintainer)]
+    )
     body = f"""\
 Tests for interface {interface} {version} failed.
 
 {result}
 
 See the workflow {workflow_url} for more detail.
+
+{mention_team_members}
 """
 
     issue = None
@@ -378,18 +384,12 @@ def create_issue(
             issue = existing_issue
             break
 
-    # Issues in public repositories can have up to 10 people assigned.
-    # https://github.com/canonical/charm-relation-interfaces/actions/runs/11318866281
-    team_members = get_team_members_from_team_slug(maintainer)[:10]
     if issue:
         issue.create_comment(body)
         print(f"GitHub issue updated: {issue.html_url}")
-        if team_members:
-            issue.edit(assignees=team_members)
-            print(f"GitHub issue assigned to {team_members}")
     else:
         issue = repo.create_issue(
-            title=title, body=body, assignees=team_members, labels=labels
+            title=title, body=body, assignees=issue_assignees, labels=labels
         )
         print(f"GitHub issue created: {issue.html_url}")