irrlicht: update patch URLs

Signed-off-by: Patrick Linnane <[email protected]>

Author: p-linnane

Formula/i/irrlicht.rb

@@ -48,13 +48,13 @@ class Irrlicht < Formula
 
   # Use libraries from Homebrew or macOS
   patch do
-    url "https://github.com/Homebrew/formula-patches/raw/69ad57d16cdd4ecdf2dfa50e9ce751b082d78cf9/irrlicht/use-system-libs.patch"
+    url "https://raw.githubusercontent.com/Homebrew/homebrew-core/d16313ce/Patches/irrlicht/use-system-libs.patch"
     sha256 "70d2534506e0e34279c3e9d8eff4b72052cb2e78a63d13ce0bc60999cbdb411b"
   end
 
   # Update Xcode project to use libraries from Homebrew and macOS
   patch do
-    url "https://github.com/Homebrew/formula-patches/raw/69ad57d16cdd4ecdf2dfa50e9ce751b082d78cf9/irrlicht/xcode.patch"
+    url "https://raw.githubusercontent.com/Homebrew/homebrew-core/1cf441a0/Patches/irrlicht/xcode.patch"
     sha256 "2cfcc34236469fcdb24b6a77489272dfa0a159c98f63513781245f3ef5c941c0"
   end