Update dependency minimal-mistakes-jekyll to v4.26.2 (#187)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Gemfile.lock

@@ -6,8 +6,8 @@ GEM
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
-    addressable (2.8.6)
-      public_suffix (>= 2.0.2, < 6.0)
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
     colorator (1.1.0)
     concurrent-ruby (1.2.3)
     em-websocket (0.5.3)
@@ -95,7 +95,7 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
-    minimal-mistakes-jekyll (4.26.1)
+    minimal-mistakes-jekyll (4.26.2)
       jekyll (>= 3.7, < 5.0)
       jekyll-feed (~> 0.1)
       jekyll-gist (~> 1.5)
@@ -118,8 +118,8 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
+    rexml (3.2.9)
+      strscan
     rouge (4.3.0)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)