changelogs are docs

We don't mark changelogs as documentation, so CI unnecessarily
does full checks when we add changelogs. Correct this.

NOTE: we only accept changelog files from top-level subdirectories.
There are changelog files in various tests that must be considered
to be "code".

(cherry picked from commit 871c0d4)

Author: geekosaur

Diff for: .github/workflows/bootstrap.skip.yml

@@ -19,13 +19,22 @@ on:
       - 'doc/**'
       - '**/README.md'
       - 'CONTRIBUTING.md'
+      - "changelog.d/**"
+      # only top level for these, because various test packages have them too
+      - "*/ChangeLog.md"
+      - "*/changelog.md"
+      - "release-notes/**"
     branches:
       - master
   pull_request:
     paths:
       - 'doc/**'
       - '**/README.md'
       - 'CONTRIBUTING.md'
+      - "changelog.d/**"
+      - "*/ChangeLog.md"
+      - "*/changelog.md"
+      - "release-notes/**"
   release:
     types:
       - created

Diff for: .github/workflows/bootstrap.yml

@@ -14,13 +14,22 @@ on:
       - 'doc/**'
       - '**/README.md'
       - 'CONTRIBUTING.md'
+      - "changelog.d/**"
+      # only top level for these, because various test packages have them too
+      - "*/ChangeLog.md"
+      - "*/changelog.md"
+      - "release-notes/**"
     branches:
       - master
   pull_request:
     paths-ignore:
       - 'doc/**'
       - '**/README.md'
       - 'CONTRIBUTING.md'
+      - "changelog.d/**"
+      - "*/ChangeLog.md"
+      - "*/changelog.md"
+      - "release-notes/**"
   release:
     types:
       - created

Diff for: .github/workflows/check-sdist.yml

@@ -11,13 +11,22 @@ on:
       - "doc/**"
       - "**/README.md"
       - "CONTRIBUTING.md"
+      - "changelog.d/**"
+      # only top level for these, because various test packages have them too
+      - "*/ChangeLog.md"
+      - "*/changelog.md"
+      - "release-notes/**"
     branches:
       - master
   pull_request:
     paths-ignore:
       - "doc/**"
       - "**/README.md"
       - "CONTRIBUTING.md"
+      - "changelog.d/**"
+      - "*/ChangeLog.md"
+      - "*/changelog.md"
+      - "release-notes/**"
   release:
     types:
       - created

Diff for: .github/workflows/validate.skip.yml

@@ -19,13 +19,22 @@ on:
       - 'doc/**'
       - '**/README.md'
       - 'CONTRIBUTING.md'
+      - "changelog.d/**"
+      # only top level for these, because various test packages have them too
+      - "*/ChangeLog.md"
+      - "*/changelog.md"
+      - "release-notes/**"
     branches:
       - master
   pull_request:
     paths:
       - 'doc/**'
       - '**/README.md'
       - 'CONTRIBUTING.md'
+      - "changelog.d/**"
+      - "*/ChangeLog.md"
+      - "*/changelog.md"
+      - "release-notes/**"
   release:
     types:
       - created