inkex update (#2168)

requirements.txt

@@ -1,7 +1,7 @@
 ./pyembroidery
 
-# inkex is not currently uploaded to pypi, the version there is extremely out of date
-inkex @ git+https://gitlab.com/inkscape/extensions.git@EXTENSIONS_AT_INKSCAPE_1.2.2
+# get up to date inkex version (March 18 2023)
+inkex @ git+https://gitlab.com/inkscape/extensions.git@29205f3cc6c39283e190a36d72d01ef428f668e5
 
 # lower bound to allow for the use of system packages on Debian and distros that have updated to 4.2
 # CI adds an == 4.1.1 constraint for prebuilt packages