fix(README): replace "cdn.pika.dev" with "cdn.skypack.dev"

    
closes #1898
  
closes #1900
closes #1901
closes #1923
  
  
Co-authored-by: Martina Fiore <27818892+MGF2@users.noreply.github.com>
Co-authored-by: Rishit Khandelwal <65018379+rishit-khandelwal@users.noreply.github.com>
Co-authored-by: amir nazari <63425449+anazari96@users.noreply.github.com>

Author: gr2m

README.md

@@ -12,11 +12,11 @@
 <tr><th>
 Browsers
 </th><td width=100%>
-Load <code>@octokit/rest</code> directly from <a href="https://cdn.pika.dev">cdn.pika.dev</a>
+Load <code>@octokit/rest</code> directly from <a href="https://cdn.skypack.dev">cdn.skypack.dev</a>
 
 ```html
 <script type="module">
-import { Octokit } from "https://cdn.pika.dev/@octokit/rest";
+import { Octokit } from "https://cdn.skypack.dev/@octokit/rest";
 </script>
 ```