Log Message:
(devel/R-pkgbuild) Updated 1.1.0 to 1.2.0

(pkgsrc)
 - LICENSE converted gnu-gpl-v3 to mit (as described below)

(upstream changes)
# pkgbuild 1.2.0

* pkgbuild is now licensed as MIT (#106)
* `compile_dll()` gains a `debug` argument for more control over the compile \ 
options used (@richfitz, #100)
* `pkgbuild_process()` and `build()` now use colored compiler diagnostics if \ 
supported (#102)
* Avoid documentation link ambiguity in R 4.1 (#105)