main/xmlto: upgrade to 0.0.29

This version fixes -Wimplicit-int issues with GCC 14:

https://www.pagure.io/xmlto/c/1375e2df75530cd198bd16ac3de38e2b0d126276

https://www.pagure.io/xmlto/c/8e34f087bf410bcc5fe445933d6ad9bae54f24b5

assigned to @ncopa

added 167 commits

• 4d2033ba...e202d608 - 166 commits from branch alpine:master
• 9802f839 - main/xmlto: upgrade to 0.0.29

Compare with previous version

merged