Update .github/workflows/update-codeql.yml

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Nathan Randall <70299490+data-douser@users.noreply.github.com>

Author: data-douser

.github/workflows/update-codeql.yml

@@ -46,6 +46,11 @@ jobs:
           latest_tag=$(gh release list --repo github/codeql-cli-binaries --json 'tagName,isLatest' --jq '.[] | select(.isLatest == true) | .tagName')
           latest_clean="${latest_tag#v}"
 
+          if [ -z "${latest_tag}" ]; then
+            echo "❌ ERROR: Failed to determine latest CodeQL CLI release. 'gh release list' returned no results or no release is marked as latest." >&2
+            echo "update_needed=false" >> $GITHUB_OUTPUT
+            exit 1
+          fi
           echo "Current CodeQL CLI version: ${current_version}"
           echo "Latest CodeQL CLI version: ${latest_clean}"