ci: Enable running doc-preview workflow on changes in samples

Tigger doc-build workflows on changes in README.rst files in
samples.

Signed-off-by: Arkadiusz Balys <arkadiusz.balys@nordicsemi.no>

Author: ArekBalysNordic

.github/actions/get-changed-docs/action.yml

@@ -40,7 +40,7 @@ runs:
         HEAD_SHA: ${{ inputs.head_sha }}
       run: |
         # Get list of changed .rst and .md files in docs/
-        changed_files=$(git diff --name-only "$BASE_SHA" "$HEAD_SHA" -- 'docs/*.rst' 'docs/*.md' 'docs/**/*.rst' 'docs/**/*.md' | head -20)
+        changed_files=$(git diff --name-only "$BASE_SHA" "$HEAD_SHA" -- 'docs/*.rst' 'docs/*.md' 'docs/**/*.rst' 'docs/**/*.md' 'samples/**/*.rst'  | head -20)
         echo "Changed documentation files:"
         echo "$changed_files"
 

.github/workflows/docbuild.yml

@@ -6,7 +6,8 @@ on:
       - main
     paths:
       - 'docs/**'
-      - '.github/workflows/docbuild.yml'
+      - '.github/workflows/doc*'
+      - 'samples/**/*.rst'
 
 permissions:
   contents: read

docs/requirements-doc.txt

@@ -26,7 +26,7 @@ sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.5
 
 # Jinja2 compatibility for Sphinx 4.x
-Jinja2<3.1
+Jinja2>=3.1.6
 MarkupSafe>=2.0.0,<2.2.0
 
 # Other dependencies