github/actions: exclude PR author from code owners review request.

The workflow has been updated to exclude the pull request author from the list
of potential reviewers. This change addresses a GitHub API error where review
requests failed if the author was also a code owner and thus included in the
review request payload. The fix iterates over the list of reviewers and removes
the PR author before constructing the JSON payload for the review request API
call.

Signed-off-by: Nikolay Martyanov <[email protected]>

Author: OhmSpectator

.github/workflows/request_codeowners_review.yml

@@ -53,12 +53,20 @@ jobs:
           # Remove @ from reviewers (it stays in the beginning of the username)
           reviewers_cleaned=${reviewers//@/}
           IFS=' ' read -ra reviewers_array <<< "$reviewers_cleaned"
-          json_array=$(printf ',\"%s\"' "${reviewers_array[@]}")
-          json_array="[${json_array:1}]" # Remove the leading comma
-          echo "JSON array: $json_array"
-
-          if [ -n "$reviewers" ]; then
-            echo "Requesting review from: ${reviewers_array[*]}"
+          # Get username of PR author to exclude from reviewers
+          pr_author="${{ github.event.pull_request.user.login }}"
+          # Remove PR author from reviewers
+          filtered_reviewers=()
+          for reviewer in ${reviewers_array[@]}; do
+            if [[ "$reviewer" != "$pr_author" ]]; then
+              filtered_reviewers+=("$reviewer")
+            fi
+          done
+          if [ ${#filtered_reviewers[@]} -gt 0 ]; then
+            json_array=$(printf ',\"%s\"' "${filtered_reviewers[@]}")
+            json_array="[${json_array:1}]" # Remove the leading comma
+            echo "JSON array: $json_array"
+            echo "Requesting review from: ${filtered_reviewers[*]}"
             echo https://api.github.com/repos/${{ github.repository }}/pulls/${{ github.event.pull_request.number }}/requested_reviewers
             curl -L \
               -D - \