github_actions_ci: Update CHANGELOG and RELEASE-NOTES for shield-1.18.1

Author: draios-jenkins

charts/shield/CHANGELOG.md

@@ -10,6 +10,9 @@ Manual edits are supported only below '## Change Log' and should be used
 exclusively to fix incorrect entries and not to add new ones.
 
 ## Change Log
+# v1.18.1
+### Chores
+* **shield** [c22a4804](https://github.com/sysdiglabs/charts/commit/c22a480409bcd5df16001322d0b4ba9a9a0d0c8d): fix broken links in README file ([#2369](https://github.com/sysdiglabs/charts/issues/2369))
 # v1.18.0
 ### New Features
 * **agent,shield,sysdig-deploy** [c8c11c3c](https://github.com/sysdiglabs/charts/commit/c8c11c3c0fca1b3fe177c3a97330bf8fe23334f0): release agent 14.2.0 ([#2361](https://github.com/sysdiglabs/charts/issues/2361))

charts/shield/RELEASE-NOTES.md

@@ -1,5 +1,5 @@
 # What's Changed
 
-### New Features
-- **agent,shield,sysdig-deploy** [c8c11c3c](https://github.com/sysdiglabs/charts/commit/c8c11c3c0fca1b3fe177c3a97330bf8fe23334f0): release agent 14.2.0 ([#2361](https://github.com/sysdiglabs/charts/issues/2361))
-#### Full diff: https://github.com/sysdiglabs/charts/compare/cluster-shield-1.15.0...shield-1.18.0
+### Chores
+- **shield** [c22a4804](https://github.com/sysdiglabs/charts/commit/c22a480409bcd5df16001322d0b4ba9a9a0d0c8d): fix broken links in README file ([#2369](https://github.com/sysdiglabs/charts/issues/2369))
+#### Full diff: https://github.com/sysdiglabs/charts/compare/shield-1.18.0...shield-1.18.1