Bump kino requirement

lib/livebook/notebook/learn/chat_app.livemd

@@ -2,7 +2,7 @@
 
 ```elixir
 Mix.install([
-  {:kino, "~> 0.15.0"}
+  {:kino, "~> 0.16.0"}
 ])
 ```
 

lib/livebook/notebook/learn/github_stars.livemd

@@ -4,7 +4,7 @@
 
 ```elixir
 Mix.install([
-  {:kino, "~> 0.15.3"},
+  {:kino, "~> 0.16.0"},
   {:req, "~> 0.5.10"},
   {:kino_vega_lite, "~> 0.1.13"}
 ])

lib/livebook/notebook/learn/kino/custom_kinos.livemd

@@ -2,7 +2,7 @@
 
 ```elixir
 Mix.install([
-  {:kino, "~> 0.15.0"}
+  {:kino, "~> 0.16.0"}
 ])
 ```
 

lib/livebook/notebook/learn/kino/intro_to_kino.livemd

@@ -2,7 +2,7 @@
 
 ```elixir
 Mix.install([
-  {:kino, "~> 0.15.0"}
+  {:kino, "~> 0.16.0"}
 ])
 ```
 

lib/livebook/notebook/learn/kino/smart_cells.livemd

@@ -2,7 +2,7 @@
 
 ```elixir
 Mix.install([
-  {:kino, "~> 0.15.0"},
+  {:kino, "~> 0.16.0"},
   {:jason, "~> 1.4"}
 ])
 ```

lib/livebook/notebook/learn/kino/vm_introspection.livemd

@@ -2,7 +2,7 @@
 
 ```elixir
 Mix.install([
-  {:kino, "~> 0.15.0"},
+  {:kino, "~> 0.16.0"},
   {:kino_vega_lite, "~> 0.1.11"}
 ])
 ```

lib/livebook/runtime/definitions.ex

@@ -1,5 +1,5 @@
 defmodule Livebook.Runtime.Definitions do
-  @kino_requirement "~> 0.15.0"
+  @kino_requirement "~> 0.16.0"
 
   def kino_requirement do
     @kino_requirement