Update mac nim download path

Author: dsrw

.github/workflows/dist_mac.yaml

@@ -45,8 +45,8 @@ jobs:
         run: brew install scons yasm
       - name: Install nim
         run: |
-          curl -LO https://nim-lang.org/download/nim-2.2.6-macosx_x64.tar.xz
-          tar xzf nim-2.2.6-macosx_x64.tar.xz
+          curl -LO https://github.com/nim-lang/nightlies/releases/download/2025-10-31-version-2-2-ab00c56904e3126ad826bb520d243513a139436a/nim-2.2.6-macosx_arm64.tar.xz
+          tar xzf nim-2.2.6-macosx_arm64.tar.xz
           echo "$(pwd)/nim-2.2.6/bin" >> $GITHUB_PATH
       - name: Install dependencies
         run: atlas install && atlas rep