Auto merge of #23363 - Darkspirit:https, r=jdm

More https

* Disabled unused legacy TLS.
It will be disabled for Nightly 72 or 73 in 5-7 months and ride the [trains](https://wiki.mozilla.org/Release_Management/Calendar).
https://blog.mozilla.org/security/2018/10/15/removing-old-versions-of-tls/
* Updated MPL license in a few files.
It would be nice if a new version of https://pypi.org/project/servo_tidy/ could be released to update WebRender as well.
* Switched servo-deps.s3.amazonaws.com back to https.
This was recently regressed by 10585be25c and fc28073dfb.
* Made https the default protocol for address bar on desktop.
Press Ctrl+L on the Glutin port and enter `example.com`:
Servo previously assumed you meant `http://example.com/`, now it is `https://example.com/`.

---

- [x] `./mach build --release` does not report any errors
- [x] `./mach test-tidy` does not report any errors

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components/script/dom/offscreencanvasrenderingcontext2d.rs

@@ -1,6 +1,6 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 use crate::dom::bindings::cell::DomRefCell;
 use crate::dom::bindings::codegen::Bindings::OffscreenCanvasRenderingContext2DBinding;