remove version pin on tao (#3485)

* remove version pin on tao
instead on including 0.31.0 as a breaking change, removing the pin upgrades tao automatically to 0.30.8

* prefer 0.30.8 as minimum tao

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Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

Cargo.toml

@@ -225,7 +225,7 @@ console_error_panic_hook = "0.1.7"
 
 # desktop
 wry = { version = "0.45.0", default-features = false }
-tao = { version = "=0.30.0", features = ["rwh_05"] }
+tao = { version = "0.30.8", features = ["rwh_05"] }
 webbrowser = "1.0.1"
 infer = "0.16.0"
 dunce = "1.0.2"