libpcre2: Upgrade to 10.42

10.41 regressed apps which were using pcre2posix.h without pcre2.h
mariadb is one such application in meta-oe which broke, this immediate
upgrade helps fixing these sort of apps. See [1] and [2]

[1] https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.42
[2] https://github.com/PCRE2Project/pcre2/commit/cd8dc40b901bdedf5bcc0b3acdd9eede16802f39



Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Wang Mingyu <wangmy@fujitsu.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>