Bump excon from 0.62.0 to 0.71.0 (#127)

Bumps [excon](https://github.com/excon/excon) from 0.62.0 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@v0.62.0...v0.71.0)

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

Author: dependabot[bot]

Gemfile.lock

@@ -118,7 +118,7 @@ GEM
       multi_json
     domain_name (0.5.20180417)
       unf (>= 0.0.5, < 1.0.0)
-    excon (0.62.0)
+    excon (0.71.0)
     extlib (0.9.16)
     facter (2.5.1)
     faraday (0.13.1)