Update boto3 requirement from ~=1.9.205 to ~=1.9.206 (#40)

dependabot-preview[bot] · xen0l · commit 317f64ad03b7 · 2019-08-12T23:21:19.000+02:00
diff --git a/requirements/requirements.txt b/requirements/requirements.txt
@@ -1,4 +1,4 @@
-boto3~=1.9.205
+boto3~=1.9.206
 marshmallow==2.20.0
 PyYAML>=5.1,<5.2
 requests==2.22.0
