Update dependency mini_portile2 to v2.8.6

Author: renovate[bot]

Gemfile.lock

@@ -80,7 +80,7 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
-    mini_portile2 (2.8.4)
+    mini_portile2 (2.8.6)
     nokogiri (1.15.4)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)