[gimp-help/gimp-help-2-10] build: add support for detecting Python 3.10

[Jacob Boerema <jboerema src gnome org>]

commit 3300c00bd15eaeb5a44ec2be4c994549048c3b8f
Author: Jacob Boerema <jgboerema gmail com>
Date:   Mon Jul 18 18:18:45 2022 -0400

    build: add support for detecting Python 3.10

 m4macros/python3dev.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/m4macros/python3dev.m4 b/m4macros/python3dev.m4
index 9a14e8b02..b2438b53d 100644
--- a/m4macros/python3dev.m4
+++ b/m4macros/python3dev.m4
@@ -38,7 +38,7 @@ AC_DEFUN([AM_PATH_PYTHON3],
  [
   dnl Find a Python3 interpreter.
   m4_define_default([_AM_PYTHON_INTERPRETER_LIST],
-[python3 python python3.9 python3.8 python3.7 python3.6])
+[python3 python python3.10 python3.9 python3.8 python3.7 python3.6])
 
   AC_ARG_VAR([PYTHON], [the Python interpreter])