pcre2: update to 10.47

[dgilman]

Description

re: patch removal: looks like the regenerated the configure script with newer autoconf and it no longer includes the conditional check for darwin for pthreads args.

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 15.4 24E248 x86_64
Xcode 16.3 16E140

Verification

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• checked your Portfile with port lint?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
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[macportsbot]

Notifying maintainers:
@larryv for port pcre.