Run cargo deny in CI (#1205)

* Run cargo deny in CI
* Use patched fork of ureq to avoid copy-left license
* Use patched fork of tts to avoid LGPL license

More:
* https://github.com/ndarilek/tts-rs/pull/21
* https://github.com/algesten/ureq/pull/479

sh/check.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env sh
 script_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
 cd "$script_path/.."
 set -eux
@@ -44,6 +44,8 @@ cargo doc --document-private-items --no-deps --all-features
 (cd epaint && cargo check --all-features)
 (cd epi && cargo check --all-features)
 
+# cargo install cargo-deny
+# cargo deny check
 
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