Bump nqp for sprintf fix

Changes: 2017.10-46-gf263b9c..2017.10-54-ga02ff393d
a02ff393d Correct incorrect tests with %b and + option in sprintf
2b13b1f78 Add support for '+' flag for %b in sprintf
4e0dfc54d [jvm] Implement close for ServerSocketHandle
9d28fccb2 [js] Add missing file
00e8bd16c Test accepts_type
a05185458 [js] Take a named argument that might be passed
17ce8f83d [jvm] Implement 'getport' for ServerSocketHandle
b21e0e25f [jvm] Skip not yet fixed test

tools/build/NQP_REVISION

@@ -1 +1 @@
-2017.10-46-gf263b9c
+2017.10-54-ga02ff393d