chore: update dependency dart to v3.7.3

renovate[bot] · web-flow · commit 819ed1a5f5ba · 2025-04-17T08:05:02.000Z
diff --git a/.tool-versions b/.tool-versions
@@ -1,2 +1,2 @@
-dart 3.4.4
+dart 3.7.3
 flutter 3.22.2-stable
