Bump omniauth from 2.1.1 to 2.1.2

Bumps [omniauth](https://github.com/omniauth/omniauth) from 2.1.1 to 2.1.2.
- [Release notes](https://github.com/omniauth/omniauth/releases)
- [Commits](omniauth/omniauth@v2.1.1...v2.1.2)

---
updated-dependencies:
- dependency-name: omniauth
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -331,7 +331,7 @@ GEM
     octokit (8.0.0)
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
-    omniauth (2.1.1)
+    omniauth (2.1.2)
       hashie (>= 3.4.6)
       rack (>= 2.2.3)
       rack-protection
@@ -374,7 +374,8 @@ GEM
     rack (2.2.8)
     rack-mini-profiler (3.3.0)
       rack (>= 1.2.0)
-    rack-protection (3.1.0)
+    rack-protection (3.2.0)
+      base64 (>= 0.1.0)
       rack (~> 2.2, >= 2.2.4)
     rack-proxy (0.7.7)
       rack