Tilde in version is removed in build with REST API

[rezib]

The tilde in version is removed when building through REST API, for example:

$ fatbuildrctl --debug --uri http://localhost:5000/default build --artifact fatbuildr --basedir pkgs  --distribution ubuntu22.04 --source-dir . --source-version 1.9.0~dev1 --watch 
…
dpkg-deb: building package 'fatbuildr-common' in '../fatbuildr-common_1.9.0dev1-1.ubuntu2204_all.deb'.
dpkg-deb: building package 'fatbuildr-wrappers' in '../fatbuildr-wrappers_1.9.0dev1-1.ubuntu2204_amd64.deb'.
dpkg-deb: building package 'fatbuildr' in '../fatbuildr_1.9.0dev1-1.ubuntu2204_all.deb'.
dpkg-deb: building package 'fatbuildr-wrappers-dbgsym' in 'debian/.debhelper/scratch-space/build-fatbuildr-wrappers/fatbuildr-wrappers-dbgsym_1.9.0dev1-1.ubuntu2204_amd64.deb'.
	Renaming fatbuildr-wrappers-dbgsym_1.9.0dev1-1.ubuntu2204_amd64.deb to fatbuildr-wrappers-dbgsym_1.9.0dev1-1.ubuntu2204_amd64.ddeb
 dpkg-genbuildinfo -O../fatbuildr_1.9.0dev1-1.ubuntu2204_amd64.buildinfo
 dpkg-genchanges -sa -O../fatbuildr_1.9.0dev1-1.ubuntu2204_amd64.changes
…

The build is submitted with version 1.9.0~dev1 but packages are actually built with version 1.9.0dev1. This is a bug and must be fixed.