chore: allow CIAM UI team to also approve .github/ changes

Previously only @SecureAuthCorp/devops could approve PRs touching
.github/ (Actions workflows, dependabot config, this CODEOWNERS file).
Add @SecureAuthCorp/team-eng-ciam-ui-write to the same rule so either
team can sign off — the UI team owns most of the workflow files that
support the quickstart samples anyway.

GitHub treats multiple owners on a single CODEOWNERS rule as OR
semantics: any one of the listed teams' approvals satisfies the
requirement.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: ksroda-sa

.github/CODEOWNERS

@@ -8,5 +8,5 @@
 **/pom.xml @ksroda-sa
 **/*.csproj @ksroda-sa
 
-# GitHub Actions and CI config
-.github/ @SecureAuthCorp/devops
+# GitHub Actions and CI config — approval from either team is sufficient
+.github/ @SecureAuthCorp/devops @SecureAuthCorp/team-eng-ciam-ui-write