Update @hansegucker's e-mail address in metadata

pyproject.toml

@@ -14,13 +14,13 @@ authors = [
     "mirabilos <thorsten.glaser@teckids.org>",
     "Frank Poetzsch-Heffter <p-h@katharineum.de>",
     "Tom Teichler <tom.teichler@teckids.org>",
-    "Jonathan Weth <wethjo@katharineum.de>",
+    "Jonathan Weth <dev@jonathanweth.de>",
     "Hangzhi Yu <yuha@katharineum.de>",
     "Lloyd Meins <meinsll@katharineum.de>",
     "magicfelix <felix@felix-zauberer.de>"
 ]
 maintainers = [
-    "Jonathan Weth <wethjo@katharineum.de>",
+    "Jonathan Weth <dev@jonathanweth.de>",
     "Dominik George <dominik.george@teckids.org>"
 ]
 license = "EUPL-1.2-or-later"