Bump newrelic from 5.2.0.127 to 5.2.1.129 in /requirements (#5566)

Bumps [newrelic](http://newrelic.com/docs/python/new-relic-for-python) from 5.2.0.127 to 5.2.1.129.

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements/common.txt

@@ -70,8 +70,8 @@ simplejson==3.16.0 \
     --hash=sha256:65b41a5cda006cfa7c66eabbcf96aa704a6be2a5856095b9e2fd8c293bad2b46 \
     --hash=sha256:c206f47cbf9f32b573c9885f0ec813d2622976cf5effcf7e472344bc2e020ac1
 
-newrelic==5.2.0.127 \
+newrelic==5.2.1.129 \
-    --hash=sha256:736c2544bccc2db5a015b1a0f2852ee855b43aec40e5439da54af68640ef3505
+    --hash=sha256:da9adab674d9fe7aa8fbabb6691b33fb7be94a32b6a80548ec7018be9df8ef65
 
 # Required by Django
 mysqlclient==1.4.4 \