Add a workflow for updating all pip3 packages

Author: lingawakad

specs/python/update_pip.yml

@@ -0,0 +1,9 @@
+---
+name: Update all pip3 packages
+command: "pip3 list --outdated --format=freeze | cut -d = -f 1 | xargs -n1 pip3 install -U"
+tags: ["python"]
+description: Update all your pip3 packages in one go.
+source_url: "https://gist.github.com/kikulikov/898108545ad3297966111aeacf44def7"
+author: Kirill Kulikov
+author_url: "https://github.com/kikulikov"
+shells: []