apache-airflow: remove pcre from build script (#482239)

pkgs/by-name/ap/apache-airflow/python-package.nix

@@ -310,13 +310,13 @@ buildPythonPackage rec {
   # Updates yarn.lock and package.json
   passthru.updateScript = writeScript "update.sh" ''
     #!/usr/bin/env nix-shell
-    #!nix-shell -i bash -p common-updater-scripts curl pcre "python3.withPackages (ps: with ps; [ pyyaml ])" yarn2nix
+    #!nix-shell -i bash -p common-updater-scripts curl "python3.withPackages (ps: with ps; [ pyyaml ])" yarn2nix
 
     set -euo pipefail
 
     # Get new version
     new_version="$(curl -s https://airflow.apache.org/docs/apache-airflow/stable/release_notes.html |
-      pcregrep -o1 'Airflow ([0-9.]+).' | head -1)"
+      grep -oE 'Airflow [0-9.]+' | head -1 | grep -oE '[0-9.]+')"
     update-source-version ${pname} "$new_version"
 
     # Update frontend