SDL: check_android_jni.py: make sure we're using python3

SDL Commits
1 
From 5dc65f829f957ff1eda1aee411a73db7ea0f330f Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Wed, 8 Oct 2025 21:32:30 -0700
Subject: [PATCH] check_android_jni.py: make sure we're using python3

---
 build-scripts/check_android_jni.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build-scripts/check_android_jni.py b/build-scripts/check_android_jni.py
index 9e519fb2df6c7..b0f6ee20e545f 100755
--- a/build-scripts/check_android_jni.py
+++ b/build-scripts/check_android_jni.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import argparse
 import dataclasses