[8.19](backport #5112) github(codeowners): robots-ci can review .github/workflows only (#5119)

mergify[bot] · web-flow · commit 0896798c6f7f · 2025-07-09T13:20:43.000+02:00
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
@@ -3,3 +3,4 @@
 
 # Allow to auto-merge PRs with Mergify
 dev-tools/integration/.env
+/.github/workflows @elastic/observablt-ci

Original file line number	Diff line number	Diff line change
`@@ -3,3 +3,4 @@`
`3`	`3`
`4`	`4`	`# Allow to auto-merge PRs with Mergify`
`5`	`5`	`dev-tools/integration/.env`
	`6`	`+/.github/workflows @elastic/observablt-ci`