patch 8.2.2550: signal stack size is wrong with latest glibc 2.34

Problem:    Signal stack size is wrong with latest glibc 2.34.
Solution:   Use sysconf(_SC_SIGSTKSZ) if available. (Zdenek Dohnal, closes
            #7895)
diff --git a/src/version.c b/src/version.c
index ff82645..0ab83f7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2550,
+/**/
     2549,
 /**/
     2548,