github_actions_ci: Update CHANGELOG and RELEASE-NOTES for shield-1.18.0

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
+# v1.18.0
+### 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))
 # v1.17.0
 ### Chores
 * **shield,common,sysdig-deploy,admission-controller,agent,cluster-scanner,cluster-shield,kspm-collector,node-analyzer,rapid-response** [1b992fbc](https://github.com/sysdiglabs/charts/commit/1b992fbc14ffd5b1f63be3896ee40deb5a858d06): bump cluster-shield to 1.15.0 ([#2360](https://github.com/sysdiglabs/charts/issues/2360))

charts/shield/RELEASE-NOTES.md

@@ -1,5 +1,5 @@
 # What's Changed
 
-### Chores
-- **shield,common,sysdig-deploy,admission-controller,agent,cluster-scanner,cluster-shield,kspm-collector,node-analyzer,rapid-response** [1b992fbc](https://github.com/sysdiglabs/charts/commit/1b992fbc14ffd5b1f63be3896ee40deb5a858d06): bump cluster-shield to 1.15.0 ([#2360](https://github.com/sysdiglabs/charts/issues/2360))
-#### Full diff: https://github.com/sysdiglabs/charts/compare/shield-1.16.0...shield-1.17.0
+### 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))
+#### Full diff: https://github.com/sysdiglabs/charts/compare/cluster-shield-1.15.0...shield-1.18.0