Add new entries to .gitignore

[helms-charity]

we don't need all the adobe security claude rules files

Please always provide the GitHub issue(s) your PR is for, as well as test URLs where your change can be observed (before and after):

Fix #

Test URLs:

• Before: https://main--sling--aemsites.aem.live/
• After: https:/update-gitignore--sling--aemsites.aem.live/

[aem-code-sync]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed.
In case there are problems, just click a checkbox below to rerun the respective action.

• Re-run all PSI checks
• Re-run failed PSI checks
• Re-sync branch

Commits

• ea19e98 ✅ (latest)