Upgrade test semver dependencies

Author: shepmaster

tests/Gemfile.lock

@@ -18,10 +18,10 @@ GEM
     diff-lcs (1.4.4)
     launchy (2.5.0)
       addressable (~> 2.7)
-    mini_mime (1.1.0)
-    mini_portile2 (2.5.3)
-    nokogiri (1.11.7)
-      mini_portile2 (~> 2.5.0)
+    mini_mime (1.1.1)
+    mini_portile2 (2.6.1)
+    nokogiri (1.12.4)
+      mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
     public_suffix (4.0.6)
     racc (1.5.2)
@@ -46,7 +46,7 @@ GEM
     selenium-webdriver (3.142.7)
       childprocess (>= 0.5, < 4.0)
       rubyzip (>= 1.2.2)
-    webdrivers (4.6.0)
+    webdrivers (4.6.1)
       nokogiri (~> 1.6)
       rubyzip (>= 1.3.0)
       selenium-webdriver (>= 3.0, < 4.0)