fix(rules/o365): remove duplicate o365 admin role assignment rule and update canonical one

[JocLRojas]

Detailed explanation of the changes

This PR cleans up a duplicate correlation rule in the Office 365 ruleset and aligns the canonical rule with the project naming convention.

• Removed: rules/office365/o365_admin_role_assignment.yml.
• Modified: rules/office365/o365-admin-role-assignment.yml — updated to keep the correct detection logic.

Reasoning

Two rule files were detecting the same Office 365 admin role assignment activity, causing duplicate alerts and confusion in the rule catalog.

Issue reference

N/A

[github-actions]

❌ Go dependencies check failed

There are outdated Go dependencies, or modules that could not be inspected.
Run bash .github/scripts/go-deps.sh --update --discover locally and
commit the updated go.mod / go.sum files.

Script output

🔍 Discovered 25 Go projects

📦 Dependencies with updates available:

  📁 ./plugins/modules-config:
     - github.com/aws/aws-sdk-go-v2/service/cloudwatchlogs: v1.76.0 → v1.77.0

  📁 ./plugins/aws:
     - github.com/aws/aws-sdk-go-v2/service/cloudwatchlogs: v1.76.0 → v1.77.0

�[0;31m❌ Please update dependencies before merging.�[0m

[github-actions]

✅ AI review — Approved

No issues detected in this diff.

✅ architecture (gemini-3-flash-lite) — clean

Summary: No reviewable changes in this diff (excluded paths only).

No findings.

✅ bugs (gemini-3-flash-lite) — clean

Summary: No reviewable changes in this diff (excluded paths only).

No findings.

✅ security (gemini-3-flash-lite) — clean

Summary: No reviewable changes in this diff (excluded paths only).

No findings.

[utmstackprapprover]

Changes requested — Go dependencies check failed (see above).