component/pcre: version up 8.41, the same version as included in MariaDB 10.1.26.

component/pcre/buildout.cfg

@@ -4,8 +4,8 @@ parts =
 
 [pcre]
 recipe = slapos.recipe.cmmi
-url = http://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.40.tar.bz2
-md5sum = 41a842bf7dcecd6634219336e2167d1d 
+url = https://ftp.pcre.org/pub/pcre/pcre-8.41.tar.bz2
+md5sum = c160d22723b1670447341b08c58981c1
 configure-options =
   --disable-static
   --enable-unicode-properties