[ci] Skip Cozystack tests on PRs that only change the docs

- Skip long workflows on PRs that only change files inside `./docs` directory.
- Not applicable to other docs in this repository, such as `packages/apps/**/*.md`,
  as they're part of the build.

Signed-off-by: Nick Volynkin <nick.volynkin@gmail.com>

.github/workflows/pull-requests-release.yaml

@@ -3,6 +3,8 @@ name: "Releasing PR"
 on:
   pull_request:
     types: [closed]
+    paths-ignore:
+      - 'docs/**/*'
 
 # Cancel in‑flight runs for the same PR when a new push arrives.
 concurrency:

.github/workflows/pull-requests.yaml

@@ -3,6 +3,8 @@ name: Pull Request
 on:
   pull_request:
     types: [labeled, opened, synchronize, reopened]
+    paths-ignore:
+      - 'docs/**/*'
 
 # Cancel in‑flight runs for the same PR when a new push arrives.
 concurrency: