devel/meson: update to 0.61.1
- Revert some 0.60.2 fixes incompatible with 0.61.0
- Drop rpath workaround for JHBuild as it's non-trivial to rebase
Changes: https://mesonbuild.com/Release-notes-for-0-61-0.html
PR: 260943
Reported by: GitHub (watch releases)
Approved by: tcberner
Exp-run by: antoine