SDL: Update .gitignore

From d1e9015639190342313a3df91ecca3a872ebf7b9 Mon Sep 17 00:00:00 2001
From: "Julio C. Rocha" <[EMAIL REDACTED]>
Date: Wed, 24 Aug 2022 15:14:48 -0700
Subject: [PATCH] Update .gitignore

---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index 3683beeb355..5d5849b1ec1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -100,6 +100,7 @@ VisualC-GDK/**/Layout
 
 # for Android
 android-project/local.properties
+android-project/.gradle/
 
 test/checkkeys
 test/checkkeysthreads