Bump excon from 0.68.0 to 0.71.0 in /src (#217)

Bumps [excon](https://github.com/excon/excon) from 0.68.0 to 0.71.0.
- [Release notes](https://github.com/excon/excon/releases)
- [Changelog](https://github.com/excon/excon/blob/master/changelog.txt)
- [Commits](excon/excon@v0.68.0...v0.71.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/Gemfile.lock

@@ -18,7 +18,7 @@ GEM
       unf (>= 0.0.5, < 1.0.0)
     dotenv (2.7.5)
     emoji_regex (1.0.1)
-    excon (0.68.0)
+    excon (0.71.0)
     faraday (0.17.0)
       multipart-post (>= 1.2, < 3)
     faraday-cookie_jar (0.0.6)