Update excon requirement from ~> 0.75, < 0.94 to ~> 0.75, < 0.97

Updates the requirements on [excon](https://github.com/excon/excon) to permit the latest version.
- [Release notes](https://github.com/excon/excon/releases)
- [Changelog](https://github.com/excon/excon/blob/master/changelog.txt)
- [Commits](excon/excon@v0.75.0...v0.96.0)

---
updated-dependencies:
- dependency-name: excon
  dependency-type: direct:production
...

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

common/dependabot-common.gemspec

@@ -26,7 +26,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "bundler", ">= 1.16", "< 3.0.0"
   spec.add_dependency "commonmarker", ">= 0.20.1", "< 0.24.0"
   spec.add_dependency "docker_registry2", "~> 1.11", ">= 1.11.0"
-  spec.add_dependency "excon", "~> 0.75", "< 0.94"
+  spec.add_dependency "excon", "~> 0.75", "< 0.97"
   spec.add_dependency "faraday", "2.6.0"
   spec.add_dependency "faraday-retry", "2.0.0"
   spec.add_dependency "gitlab", "4.19.0"