update matplotlib-3.7.0.patch

Author: cosminbasca

graalpython/lib-graalpython/patches/matplotlib/matplotlib-3.7.0.patch

@@ -1,7 +1,8 @@
-diff -u -r a/setupext.py b/setupext.py
+diff --git a/setupext.py b/setupext.py
+index a898d64..1f0b0b4 100644
 --- a/setupext.py
 +++ b/setupext.py
-@@ -631,7 +631,7 @@
+@@ -631,7 +631,7 @@ class FreeType(SetupPackage):
                      var: value
                      for var, value in sysconfig.get_config_vars().items()
                      if var in {"CC", "CFLAGS", "CXX", "CXXFLAGS", "LD",