Bump fog-aws from 3.19.0 to 3.20.0

Bumps [fog-aws](https://github.com/fog/fog-aws) from 3.19.0 to 3.20.0.
- [Changelog](https://github.com/fog/fog-aws/blob/master/CHANGELOG.md)
- [Commits](fog/fog-aws@v3.19.0...v3.20.0)

---
updated-dependencies:
- dependency-name: fog-aws
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -94,7 +94,7 @@ GEM
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
     erubi (1.12.0)
-    excon (0.99.0)
+    excon (0.103.0)
     factory_bot (6.2.1)
       activesupport (>= 5.0.0)
     factory_bot_rails (6.2.0)
@@ -124,7 +124,7 @@ GEM
     faraday-rack (1.0.0)
     faraday-retry (1.0.3)
     ffi (1.15.5)
-    fog-aws (3.19.0)
+    fog-aws (3.20.0)
       fog-core (~> 2.1)
       fog-json (~> 1.1)
       fog-xml (~> 0.1)