devel/nimble: Upgrade to 0.14.2

ChangeLog: https://github.com/nim-lang/nimble/releases/tag/v0.14.2

 * Remove types requiresInit pragma which conflicts with json
 * Common: bump nimbleVersion from 0.14.0 to 0.14.1
 * Run with --noNimblePath when there is a lock file
 * Lock: write lock file with final newline
 * Allow locking nim version in nimble.lock
 * Make sure that nimble.paths is checked relative to config.nims
 * Document where token is stored

PR:		269781
Reported by:	ports@nicandneal.net (maintainer)