Bump graphql-core from 2.2 to 2.2.1 in /requirements

Bumps [graphql-core](https://github.com/graphql-python/graphql-core) from 2.2 to 2.2.1.
- [Release notes](https://github.com/graphql-python/graphql-core/releases)
- [Commits](https://github.com/graphql-python/graphql-core/compare/v2.2.0...v2.2.1)

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

requirements/common.txt

@@ -239,9 +239,9 @@ graphene-django==2.3.2 \
 graphene==2.1.6 \
     --hash=sha256:2ac16d6bb3bdba4da3daa0f6d15b74ac585ed6a016980f502c77c3e687c763bb \
     --hash=sha256:fcbcb24ee960b2c768de4285fbd025aa98eed4ecb6a679bbd41985b05b4008c5
-graphql-core==2.2 \
-    --hash=sha256:6288fe97c32d2f868a2dfe62e766dc85d48c96c1d085294edf44714190f2e4f3 \
-    --hash=sha256:60ef8277b82aaad49e87154a0288a9542a82a63909568375712f826b1c280ef5
+graphql-core==2.2.1 \
+    --hash=sha256:1488f2a5c2272dc9ba66e3042a6d1c30cea0db4c80bd1e911c6791ad6187d91b \
+    --hash=sha256:da64c472d720da4537a2e8de8ba859210b62841bd47a9be65ca35177f62fe0e4
 graphql-relay==0.4.5 --hash=sha256:2716b7245d97091af21abf096fabafac576905096d21ba7118fba722596f65db
 typing==3.7.4 \
     --hash=sha256:38566c558a0a94d6531012c8e917b1b8518a41e418f7f15f00e129cc80162ad3 \