Bump omniauth-facebook from 6.0.0 to 7.0.0

Bumps [omniauth-facebook](https://github.com/mkdynamic/omniauth-facebook) from 6.0.0 to 7.0.0.
- [Release notes](https://github.com/mkdynamic/omniauth-facebook/releases)
- [Changelog](https://github.com/simi/omniauth-facebook/blob/master/CHANGELOG.md)
- [Commits](simi/omniauth-facebook@v6.0.0...v7.0.0)

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

Gemfile.lock

@@ -249,7 +249,7 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     json (2.3.1)
-    jwt (2.2.1)
+    jwt (2.2.2)
     kgio (2.11.3)
     kramdown (2.3.0)
       rexml
@@ -300,7 +300,7 @@ GEM
     omniauth (1.9.1)
       hashie (>= 3.4.6)
       rack (>= 1.6.2, < 3)
-    omniauth-facebook (6.0.0)
+    omniauth-facebook (7.0.0)
       omniauth-oauth2 (~> 1.2)
     omniauth-github (1.4.0)
       omniauth (~> 1.5)
@@ -315,8 +315,8 @@ GEM
     omniauth-oauth (1.1.0)
       oauth
       omniauth (~> 1.0)
-    omniauth-oauth2 (1.6.0)
-      oauth2 (~> 1.1)
+    omniauth-oauth2 (1.7.0)
+      oauth2 (~> 1.4)
       omniauth (~> 1.9)
     omniauth-openid (1.0.1)
       omniauth (~> 1.0)