qa: add suppressions for most recent valgrind version

qa/valgrind-suppress-3.22.0

@@ -0,0 +1,50 @@
+# qa/386, qa/391, qa/393, qa/391, qa/393, qa/394, qa/459,
+# qa/770, qa/1080, qa/1302 and qa/1816 on Fedora 38 and
+# Fedora Rawhide
+#
+# at 0x483880B: malloc (vg_replace_malloc.c:299)
+# by 0x4A0D490: tsearch (in /usr/lib64/libc-2.28.so)
+# by 0x4871EA6: __pmFindPDUBuf (pdubuf.c:126)
+# ...
+{
+   tsearch
+   Memcheck:Leak
+   match-leak-kinds: possible
+   fun:malloc
+   fun:tsearch
+   fun:__pmFindPDUBuf
+   ...
+}
+
+# qa/1080 and qa/490 and qa/386 and qa/459 on Fedora 38
+# also on bozo-vm (Debian bullseye/sid) + qa/393 and qa/394
+# at 0x483880B: malloc (vg_replace_malloc.c:299)
+# by 0x4871E5F: __pmFindPDUBuf (pdubuf.c:115)
+# ...
+{
+   findpdubuf
+   Memcheck:Leak
+   match-leak-kinds: possible
+   fun:malloc
+   fun:__pmFindPDUBuf
+   ...
+}
+
+# qa/720 on fedora 38
+# at 0x483A809: malloc (vg_replace_malloc.c:307)
+# by 0x4CB7592: sasl_client_new (in /usr/lib64/libsasl2.so.3.0.0)
+# by 0x48C30D4: __pmSecureClientHandshake (secureconnect.c:955)
+# by 0x486F78A: __pmConnectHandshake (connect.c:207)
+# by 0x4870930: __pmConnectPMCD (connect.c:467)
+# by 0x4874A9C: pmNewContext (context.c:1152)
+# by 0x10BB4A: main (pminfo.c:1196)
+{
+   sasl_client_new
+   Memcheck:Leak
+   match-leak-kinds: definite
+   fun:malloc
+   fun:sasl_client_new
+   ...
+   fun:pmNewContext
+   ...
+}