Update boto3 requirement from ~=1.16.56 to ~=1.17.7 (#759)

dependabot[bot] · web-flow · commit ee077f7b8487 · 2021-02-12T22:49:36.000+01:00
diff --git a/requirements/requirements.txt b/requirements/requirements.txt
@@ -1,4 +1,4 @@
-boto3~=1.16.56
+boto3~=1.17.7
 cryptography==3.3.2
 marshmallow==3.10.0
 packaging==20.9
