Change jsDelivr CDN URL to Fastly (#7156)

(cherry picked from commit 7b242bf11833ebd6dda34df295dfa7cd45cb88d0)

app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionGithubApi.kt

@@ -129,7 +129,7 @@ internal class ExtensionGithubApi {
 }
 
 private const val REPO_URL_PREFIX = "https://raw.githubusercontent.com/tachiyomiorg/tachiyomi-extensions/repo/"
-private const val FALLBACK_REPO_URL_PREFIX = "https://cdn.jsdelivr.net/gh/tachiyomiorg/tachiyomi-extensions@repo/"
+private const val FALLBACK_REPO_URL_PREFIX = "https://fastly.jsdelivr.net/gh/tachiyomiorg/tachiyomi-extensions@repo/"
 
 @Serializable
 private data class ExtensionJsonObject(