Bump excon from 0.75.0 to 0.76.0 (#14490)

Bumps [excon](https://github.com/excon/excon) from 0.75.0 to 0.76.0.
- [Release notes](https://github.com/excon/excon/releases)
- [Changelog](https://github.com/excon/excon/blob/master/changelog.txt)
- [Commits](https://github.com/excon/excon/compare/v0.75.0...v0.76.0

)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -209,7 +209,7 @@ GEM
     erubi (1.9.0)
     et-orbi (1.2.4)
       tzinfo
-    excon (0.75.0)
+    excon (0.76.0)
     fabrication (2.21.1)
     faker (2.13.0)
       i18n (>= 1.6, < 2)