sip: update to version 6.7.11, support Python 3.10. (#9464)

Recipe cleanups/fixes.

dev-python/sip/patches/sip-6.7.11.patchset

@@ -1,11 +1,11 @@
-From 4fdd942a49577984bcc84acf1f7b7e7025d458ba Mon Sep 17 00:00:00 2001
+From a5b67fff1944aa8180f12f290892920b208a0906 Mon Sep 17 00:00:00 2001
 From: Jerome Duval <jerome.duval@gmail.com>
 Date: Sun, 21 Nov 2021 00:01:45 +0100
 Subject: use get_python_inc
 
 
 diff --git a/sipbuild/project.py b/sipbuild/project.py
-index 6a12fba..84c8171 100644
+index 60a3e4f..92f910e 100644
 --- a/sipbuild/project.py
 +++ b/sipbuild/project.py
 @@ -22,6 +22,7 @@
@@ -16,7 +16,7 @@ index 6a12fba..84c8171 100644
  import os
  import packaging
  import shutil
-@@ -78,7 +79,7 @@ class Project(AbstractProject, Configurable):
+@@ -73,7 +74,7 @@ class Project(AbstractProject, Configurable):
          Option('py_debug', option_type=bool),
  
          # The name of the directory containing Python.h.
@@ -26,5 +26,5 @@ index 6a12fba..84c8171 100644
          # The name of the target Python platform.
          Option('py_platform'),
 -- 
-2.30.2
+2.37.3