Bump omniauth-google-oauth2 from 0.6.1 to 0.8.0 (#6184)

Bumps [omniauth-google-oauth2](https://github.com/zquestz/omniauth-google-oauth2) from 0.6.1 to 0.8.0.
- [Release notes](https://github.com/zquestz/omniauth-google-oauth2/releases)
- [Changelog](https://github.com/zquestz/omniauth-google-oauth2/blob/master/CHANGELOG.md)
- [Commits](zquestz/omniauth-google-oauth2@v0.6.1...v0.8.0)

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

Gemfile.lock

@@ -304,10 +304,10 @@ GEM
     omniauth-github (1.3.0)
       omniauth (~> 1.5)
       omniauth-oauth2 (>= 1.4.0, < 2.0)
-    omniauth-google-oauth2 (0.6.1)
+    omniauth-google-oauth2 (0.8.0)
       jwt (>= 2.0)
       omniauth (>= 1.1.1)
-      omniauth-oauth2 (>= 1.5)
+      omniauth-oauth2 (>= 1.6)
     omniauth-oauth (1.1.0)
       oauth
       omniauth (~> 1.0)