fixup! Add a GitHub workflow to monitor component updates

As per https://gnupg.org/download/index.html#sec-1-1, GnuPG's version
numbers with an odd minor version are for development only. We are not
interested in those, but only in the stable ones, i.e. the ones with
even minor versions.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

.github/workflows/monitor-components.yml

@@ -68,6 +68,9 @@ jobs:
             title-pattern: ^libgcrypt-[0-9\.]*$
           - label: gpg
             feed: https://github.com/gpg/gnupg/releases.atom
+            # As per https://gnupg.org/download/index.html#sec-1-1, the stable
+            # versions are the one with an even minor version number.
+            title-pattern: ^gnupg-\d+\.\d*[02468]\.
           - label: mintty
             feed: https://github.com/mintty/mintty/releases.atom
           - label: 7-zip