lang/ruby31: Update to 3.1.6

ReleaseNotes:	https://www.ruby-lang.org/en/news/2024/05/29/ruby-3-1-6-released/

Mk/Uses/ruby.mk

@@ -148,7 +148,7 @@ RUBY?=			${LOCALBASE}/bin/ruby${RUBY_SUFFIX}
 #
 # Ruby 3.1
 #
-RUBY_DISTVERSION=	3.1.5
+RUBY_DISTVERSION=	3.1.6
 RUBY_PORTREVISION=	0
 
 .      elif ${RUBY_VER} == 3.2

lang/ruby31/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1713880378
-SHA256 (ruby/ruby-3.1.5.tar.xz) = f9375a45bdf1cc41298558e7ac6c367f7b6cdcccf7196618b21f0886ff583b91
-SIZE (ruby/ruby-3.1.5.tar.xz) = 15293020
+TIMESTAMP = 1717025731
+SHA256 (ruby/ruby-3.1.6.tar.xz) = 597bd1849f252d8a6863cb5d38014ac54152b508c36dca156f6356a9e63c6102
+SIZE (ruby/ruby-3.1.6.tar.xz) = 15273916

lang/ruby31/files/patch-util.c

@@ -1,29 +0,0 @@
---- util.c.orig	2022-04-12 11:11:15 UTC
-+++ util.c
-@@ -218,6 +218,7 @@ typedef int (cmpfunc_t)(const void*, const void*, void
- 
- typedef int (cmpfunc_t)(const void*, const void*, void*);
- 
-+#if !defined HAVE_GNU_QSORT_R
- #if defined HAVE_QSORT_S && defined RUBY_MSVCRT_VERSION
- /* In contrast to its name, Visual Studio qsort_s is incompatible with
-  * C11 in the order of the comparison function's arguments, and same
-@@ -263,7 +264,7 @@ ruby_qsort(void* base, const size_t nel, const size_t 
-     qsort_s(base, nel, size, cmp, d);
- }
- # define HAVE_GNU_QSORT_R 1
--#elif !defined HAVE_GNU_QSORT_R
-+#else
- /* mm.c */
- 
- #define mmtype long
-@@ -530,7 +531,8 @@ ruby_qsort(void* base, const size_t nel, const size_t 
-     else goto nxt;                         /* need not to sort both sides */
-   }
- }
--#endif /* HAVE_GNU_QSORT_R */
-+#endif
-+#endif /* !HAVE_GNU_QSORT_R */
- 
- char *
- ruby_strdup(const char *str)