Update devel/objfw to 1.0.12

ObjFW 1.0.11 -> ObjFW 1.0.12, 2024-03-11
* Fixes a regression in OFZIPArchive that was introduced in 1.0.11 that
  resulted in failing to extract archives and creating broken archives.
* Fixes a rare condition where OFInflateStream could end up in an endless
  loop.
* Fixes OFTarArchiveEntry not having a default date, which could result in
  messaging nil on a FP return, which yielded invalid results on 32-bit x86
  with GCC.

(js)