ci: add relevant commits in diff

ci/apps/tasks/open-charts-pr.sh

@@ -35,6 +35,18 @@ git config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"
 git checkout ${ref}
 app_src_files=($(buck2 uquery 'inputs(deps("'"//apps/${APP}:"'"))' 2>/dev/null))
 
+relevant_commits=()
+for commit in $(git log --format="%H" ${old_ref}..${ref}); do
+  changed_files=$(git diff-tree --no-commit-id --name-only -r $commit)
+
+  for file in ${changed_files[@]}; do
+    if [[ " ${app_src_files[*]} " == *"$file"* ]]; then
+      relevant_commits+=($commit)
+      break
+    fi
+  done
+done
+
 # create a branch from the old state and commit the new state of the app
 set +e
 git fetch origin ${APP}-${old_ref}
@@ -66,6 +78,17 @@ Code diff contained in this image:
 
 ${github_url}/compare/${APP}-${old_ref}...${APP}-${ref}
 
+Relevant commits:
+EOF
+
+for commit in ${relevant_commits[@]}; do
+  cat <<EOF >> ../body.md
+- ${github_url}/commit/${commit}
+EOF
+done
+
+cat <<EOF >> ../body.md
+
 The ${APP} image will be bumped to digest:
 \`\`\`
 ${digest}