prereq-build: add Python 3.13 support

Add support for Python version 3.13 to include/prereq-build.mk.
One of the reasons for this change is that
Ubuntu 25.04 ships with Python 3.13 as default version.
Let's support it.

Signed-off-by: Kacper Ludwinski <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/20735
Signed-off-by: Christian Marangi <[email protected]>

include/prereq-build.mk

@@ -187,6 +187,7 @@ $(eval $(call SetupHostCommand,perl,Please install Perl 5.x, \
 	perl --version | grep "perl.*v5"))
 
 $(eval $(call SetupHostCommand,python,Please install Python >= 3.7, \
+	python3.13 -V 2>&1 | grep 'Python 3', \
 	python3.12 -V 2>&1 | grep 'Python 3', \
 	python3.11 -V 2>&1 | grep 'Python 3', \
 	python3.10 -V 2>&1 | grep 'Python 3', \
@@ -196,6 +197,7 @@ $(eval $(call SetupHostCommand,python,Please install Python >= 3.7, \
 	python3 -V 2>&1 | grep -E 'Python 3\.([7-9]|[0-9][0-9])\.?'))
 
 $(eval $(call SetupHostCommand,python3,Please install Python >= 3.7, \
+	python3.13 -V 2>&1 | grep 'Python 3', \
 	python3.12 -V 2>&1 | grep 'Python 3', \
 	python3.11 -V 2>&1 | grep 'Python 3', \
 	python3.10 -V 2>&1 | grep 'Python 3', \