Update CodeMirror to version 5.49.0 (#8381)

* Update CodeMirror to version 5.49.0

* Update CodeMirror versions in librejs and VERSIONS

public/vendor/plugins/codemirror/mode/crystal/index.html

@@ -14,7 +14,7 @@
 </style>
 
 <div id=nav>
-  <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
+  <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
 
   <ul>
     <li><a href="../../index.html">Home</a>
@@ -48,8 +48,6 @@ puts "Listening on http://0.0.0.0:8080"
 server.listen
 
 module Foo
-  def initialize(@foo); end
-
   abstract def abstract_method : String
 
   @[AlwaysInline]
@@ -58,7 +56,8 @@ module Foo
   end
 
   struct Foo
-    def initialize(@foo); end
+    def initialize(@foo : ::Foo)
+    end
 
     def hello_world
       @foo.abstract_method
@@ -71,8 +70,7 @@ class Bar
 
   @@foobar = 12345
 
-  def initialize(@bar)
-    super(@bar.not_nil! + 100)
+  def initialize(@bar : Int32)
   end
 
   macro alias_method(name, method)
@@ -87,11 +85,10 @@ class Bar
 
   alias_method abstract_method, a_method
 
-  macro def show_instance_vars : Nil
+  def show_instance_vars : Nil
     {% for var in @type.instance_vars %}
       puts "@{{ var }} = #{ @{{ var }} }"
     {% end %}
-    nil
   end
 end
 
@@ -101,9 +98,9 @@ lib LibC
   fun c_puts = "puts"(str : Char*) : Int
 end
 
-$baz = Baz.new(100)
-$baz.show_instance_vars
-$baz.with_foofoo do
+baz = Baz.new(100)
+baz.show_instance_vars
+baz.with_foofoo do
   LibC.c_puts hello_world
 end
 </textarea></form>