macvim: rebuild to fix python linkage

Fixes #15741.
Fixes #15779.
Fixes #15802.

Closes #15803.

Signed-off-by: ilovezfs <ilovezfs@icloud.com>

Formula/macvim.rb

@@ -5,7 +5,7 @@ class Macvim < Formula
   url "https://github.com/macvim-dev/macvim/archive/snapshot-134.tar.gz"
   version "8.0-134"
   sha256 "5b512d9c02703df7ffcd3f5268e5ac8a21e1e046dca60ec7544791f11b523e0a"
-  revision 1
+  revision 2
   head "https://github.com/macvim-dev/macvim.git"
 
   bottle do
@@ -110,6 +110,7 @@ def caveats
   end
 
   test do
+    ENV.prepend_path "PATH", Formula["python"].opt_libexec/"bin"
     # Simple test to check if MacVim was linked to Python version in $PATH
     if build.with? "python"
       system_framework_path = `python-config --exec-prefix`.chomp