Render a depecation message in job summary.

twine-upload.sh

@@ -2,6 +2,29 @@
 set -Eeuo pipefail
 
 
+echo \
+    '# UNSUPPORTED GITHUB ACTION VERSION' \
+    '\n\n' \
+    You are using `pypa/gh-action-pypi-publish@master`. \
+    The `master` branch of this project has been sunset and will not \
+    receive any updates, not even security bug fixes. Please, make \
+    sure to use a supported version. If you want to pin to v1 major \
+    version, use `pypa/gh-action-pypi-publish@release/v1`. If you \
+    feel adventurous, you may opt to use use \
+    `pypa/gh-action-pypi-publish@unstable/v1` instead. A more \
+    general recommendation is to pin to exact tags or commit shas. \
+    '\n\n' \
+    '\n\n' \
+    '### Oh, and while you are here — #StandWithUkraine' \
+    '\n\n' \
+    '[![SWUbanner]][SWUdocs]' \
+    '\n\n' \
+    '[SWUbanner]:' \
+    'https://raw.githubusercontent.com/vshymanskyy/StandWithUkraine/main/banner-direct-single.svg' \
+    '\n\n' \
+    '[SWUdocs]:' \
+    'https://github.com/vshymanskyy/StandWithUkraine/blob/main/docs/README.md' \
+    >> "${GITHUB_STEP_SUMMARY}"
 echo \
     ::warning file='# >>' PyPA publish to PyPI GHA'%3A' \
     UNSUPPORTED GITHUB ACTION VERSION \