Upgrade dfe-autocomplete

* Update to fix failing css build due to include of IE8 that is no
  longer part of govuk-frontend

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/DFE-Digital/dfe-autocomplete.git
-  revision: 36d80e6b5bba67c92cd9ec6982a4e536d1889aed
+  revision: 11738c0e25778162e26eb7ab5e22a6ffce671b08
   specs:
     dfe-autocomplete (0.1.0)
       actionview (>= 7.0.2.3)
@@ -209,9 +209,10 @@ GEM
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     inflection (1.0.0)
-    io-console (0.6.0)
-    irb (1.6.4)
-      reline (>= 0.3.0)
+    io-console (0.7.2)
+    irb (1.11.1)
+      rdoc
+      reline (>= 0.4.2)
     jaro_winkler (1.5.4)
     jsbundling-rails (1.1.2)
       railties (>= 6.0.0)
@@ -294,6 +295,8 @@ GEM
       racc
     pg (1.5.3)
     prettier_print (1.2.1)
+    psych (5.1.2)
+      stringio
     public_suffix (5.0.1)
     puma (6.4.2)
       nio4r (~> 2.0)
@@ -348,10 +351,12 @@ GEM
     rainbow (3.1.1)
     rake (13.1.0)
     rbs (2.8.4)
+    rdoc (6.6.2)
+      psych (>= 4.0.0)
     redcarpet (3.6.0)
     redis (4.8.1)
     regexp_parser (2.8.1)
-    reline (0.3.3)
+    reline (0.4.2)
       io-console (~> 0.5)
     responders (3.1.0)
       actionpack (>= 5.2)
@@ -467,6 +472,7 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
+    stringio (3.1.0)
     syntax_tree (6.1.1)
       prettier_print (>= 1.2.0)
     syntax_tree-haml (4.0.3)