Merge pull request #162 from dxw/renovate/dotenv-3.x-lockfile

Update dependency dotenv to v3.1.7

Author: renovate[bot]

Gemfile.lock

@@ -16,7 +16,7 @@ GEM
     coderay (1.1.3)
     concurrent-ruby (1.2.3)
     diff-lcs (1.5.1)
-    dotenv (3.1.6)
+    dotenv (3.1.7)
     faraday (1.10.4)
       faraday-em_http (~> 1.0)
       faraday-em_synchrony (~> 1.0)