fix panic with arena size of 128

Cargo.toml

@@ -27,7 +27,7 @@ embassy-executor = { version = "0.6.1", features = [
     "integrated-timers",
     "arch-spin",
     "executor-thread",
-    "task-arena-size-128", # or better use nightly, but fails on recent Rust versions
+    "task-arena-size-192", # or better use nightly, but fails on recent Rust versions
 ] }
 embassy-time = { version = "0.3.0" }
 {%- endif %}