Update bundled PCRE2-library to version 10.23

Some manual changes done to the library were lost with this update.
They will be added in the next commit.

pcre2/testdata/testinput18

@@ -1,17 +1,112 @@
 # This set of tests is run only with the 8-bit library. It tests the POSIX
-# interface with UTF/UCP support, which is supported only with the 8-bit
-# library. This test should not be run with JIT (which is not available for the
-# POSIX interface).
+# interface, which is supported only with the 8-bit library. This test should
+# not be run with JIT (which is not available for the POSIX interface).
     
+#forbid_utf
 #pattern posix
 
-/a\x{1234}b/utf
-    a\x{1234}b
+# Test invalid options
 
-/\w/
-    +++\x{c2}
+/abc/auto_callout
 
-/\w/ucp
-    +++\x{c2}
-    
-# End of testdata/testinput17
+/abc/
+   abc\=find_limits
+
+/abc/
+  abc\=partial_hard
+
+# Real tests
+
+/abc/
+    abc
+
+/^abc|def/
+    abcdef
+    abcdef\=notbol
+
+/.*((abc)$|(def))/
+    defabc
+    defabc\=noteol
+
+/the quick brown fox/
+    the quick brown fox
+\= Expect no match
+    The Quick Brown Fox
+
+/the quick brown fox/i
+    the quick brown fox
+    The Quick Brown Fox
+
+/(*LF)abc.def/
+\= Expect no match
+    abc\ndef
+
+/(*LF)abc$/
+    abc
+    abc\n
+
+/(abc)\2/
+
+/(abc\1)/
+\= Expect no match
+    abc
+
+/a*(b+)(z)(z)/
+    aaaabbbbzzzz
+    aaaabbbbzzzz\=ovector=0
+    aaaabbbbzzzz\=ovector=1
+    aaaabbbbzzzz\=ovector=2
+
+/(*ANY)ab.cd/
+    ab-cd
+    ab=cd
+\= Expect no match
+    ab\ncd
+
+/ab.cd/s
+    ab-cd
+    ab=cd
+    ab\ncd
+
+/a(b)c/posix_nosub
+    abc
+
+/a(?P<name>b)c/posix_nosub
+    abc
+
+/(a)\1/posix_nosub
+    zaay
+
+/a?|b?/
+    abc
+\= Expect no match
+    ddd\=notempty
+
+/\w+A/
+   CDAAAAB
+
+/\w+A/ungreedy
+   CDAAAAB
+   
+/\Biss\B/I,aftertext
+    Mississippi
+
+/abc/\
+
+"(?(?C)"
+
+"(?(?C))"
+
+/abcd/substitute_extended
+
+/\[A]{1000000}**/expand,regerror_buffsize=31
+
+/\[A]{1000000}**/expand,regerror_buffsize=32
+
+//posix_nosub
+    \=offset=70000
+
+/(?=(a\K))/
+    a
+     
+# End of testdata/testinput18