Update dependency flutter to v3.38.9

renovate[bot] · web-flow · commit 0f85c7bc8cbe · 2026-02-02T00:35:12.000Z
diff --git a/.tool-versions b/.tool-versions
@@ -1,2 +1,2 @@
-flutter 3.38.7-stable
+flutter 3.38.9-stable
 java openjdk-21.0.2
