Update raven from 6.4.0 to 6.5.0

requirements/prod.txt

@@ -306,9 +306,9 @@ pytz==2017.3 \
     --hash=sha256:dd2e4ca6ce3785c8dd342d1853dd9052b19290d5bf66060846e5dc6b8d6667f7 \
     --hash=sha256:699d18a2a56f19ee5698ab1123bbcc1d269d061996aeb1eda6d89248d3542b82 \
     --hash=sha256:fae4cffc040921b8a2d60c6cf0b5d662c1190fe54d718271db4eb17d44a185b7
-raven==6.4.0 \
-    --hash=sha256:2c9cd4d8c267f57db625305aaa89e7dd852d6864c13c7b84f4d4500df07bebd9 \
-    --hash=sha256:b8edbb3335ed6c23cb168ced37fb523c1b91d9f3b0eddb90934249977841a902
+raven==6.5.0 \
+    --hash=sha256:0adae40e004dfe2181d1f2883aa3d4ca1cf16dbe449ae4b445b011c6eb220a90 \
+    --hash=sha256:84da75114739191bdf2388f296ffd6177e83567a7fbaf2701e034ad6026e4f3b
 # rdflib is required by amo-validator
 rdflib==3.4.0 \
     --hash=sha256:78d5f11a7001661d7637f9e61554a5f8971e197f3f6d17ba5e4039b0668116cf # pyup: ==3.4.0