build: exclude markdown files from some GitHub Actions

Ignore all markdown files when determining if test-asan, coverage-*, and
test-macos need to run.

Refs: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#patterns-to-match-file-paths

PR-URL: #39565
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

.github/workflows/test-asan.yml

@@ -9,10 +9,12 @@ on:
       - v[0-9]+.x-staging
       - v[0-9]+.x
     paths-ignore:
+      - '**.md'
       - 'doc/**'
   pull_request:
     types: [opened, synchronize, reopened, ready_for_review]
     paths-ignore:
+      - '**.md'
       - 'doc/**'
 
 env:

.github/workflows/test-macos.yml

@@ -4,6 +4,7 @@ on:
   pull_request:
     types: [opened, synchronize, reopened, ready_for_review]
     paths-ignore:
+      - '**.md'
       - 'doc/**'
   push:
     branches:
@@ -13,6 +14,7 @@ on:
       - v[0-9]+.x-staging
       - v[0-9]+.x
     paths-ignore:
+      - '**.md'
       - 'doc/**'
 
 env: