chore: Ignore dependabot, prepare-release and Gitflow for PR references

[JPeer264]

We don't need to add tickets for our internal releases such as #18378, Gitflow automations or contributor updates

[github-actions]

node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

Scenario	Requests/s	% of Baseline	Prev. Requests/s	Change %
GET Baseline	8,776	-	11,766	-25%
GET With Sentry	1,653	19%	2,078	-20%
GET With Sentry (error only)	5,852	67%	7,762	-25%
POST Baseline	1,150	-	1,203	-4%
POST With Sentry	567	49%	614	-8%
POST With Sentry (error only)	948	82%	1,064	-11%
MYSQL Baseline	3,161	-	4,068	-22%
MYSQL With Sentry	486	15%	577	-16%
MYSQL With Sentry (error only)	2,531	80%	3,350	-24%

View base workflow run

[andreiborza]

Thanks!