Re-enable Travis for Intel macOS builds

Author: bengotow

.travis.yml

@@ -45,11 +45,9 @@ matrix:
     - os: linux
       dist: bionic
       env: CC=gcc-10 CXX=g++-10
-    # MacOS Universal builds are compiled locally on my machine and published,
-    # because Travis doesn't support Apple Silicon.
-    # - os: osx
-    #   osx_image: xcode13.1
-    #   env: CC=clang CXX=clang++ SIGN_BUILD=true
+    - os: osx
+      osx_image: xcode14
+      env: CC=clang CXX=clang++ SIGN_BUILD=true
 
 before_install:
   # Decrypt and uncompress code signing certs, etc.