Rollup merge of rust-lang#57400 - tspiteri:source-serif-pro-it, r=GuillaumeGomez

Rustdoc: update Source Serif Pro and replace Heuristica italic

When Source Serif Pro was used to replace Heuristica in rust-lang#15530, the italic variant was not ready yet, but now it is. This PR updates the Source Serif Pro font files to the [latest release](https://github.com/adobe-fonts/source-serif-pro/releases/tag/2.007R-ro%2F1.007R-it) which includes an italic variant, and replaces Heuristica italic with Source Serif Pro italic.

Fixes rust-lang#57363.

Author: Centril

src/librustdoc/html/render.rs

@@ -893,14 +893,12 @@ themePicker.onblur = handleThemeButtonsBlur;
           static_files::fira_sans::MEDIUM)?;
     write(cx.dst.join("FiraSans-LICENSE.txt"),
           static_files::fira_sans::LICENSE)?;
-    write(cx.dst.join("Heuristica-Italic.woff"),
-          static_files::heuristica::ITALIC)?;
-    write(cx.dst.join("Heuristica-LICENSE.txt"),
-          static_files::heuristica::LICENSE)?;
-    write(cx.dst.join("SourceSerifPro-Regular.woff"),
+    write(cx.dst.join("SourceSerifPro-Regular.ttf.woff"),
           static_files::source_serif_pro::REGULAR)?;
-    write(cx.dst.join("SourceSerifPro-Bold.woff"),
+    write(cx.dst.join("SourceSerifPro-Bold.ttf.woff"),
           static_files::source_serif_pro::BOLD)?;
+    write(cx.dst.join("SourceSerifPro-It.ttf.woff"),
+          static_files::source_serif_pro::ITALIC)?;
     write(cx.dst.join("SourceSerifPro-LICENSE.txt"),
           static_files::source_serif_pro::LICENSE)?;
     write(cx.dst.join("SourceCodePro-Regular.woff"),

src/librustdoc/html/static/COPYRIGHT.txt

@@ -12,21 +12,6 @@ included, and carry their own copyright notices and license terms:
     Licensed under the SIL Open Font License, Version 1.1.
     See FiraSans-LICENSE.txt.
 
-* Heuristica (Heuristica-Italic.woff):
-
-    Copyright 1989, 1991 Adobe Systems Incorporated. All rights reserved.
-    Utopia is either a registered trademark or trademark of Adobe Systems
-    Incorporated in the United States and/or other countries. Used under
-    license.
-
-    Copyright 2006 Han The Thanh, Vntopia font family, http://vntex.sf.net
-
-    Copyright (c) 2008-2012, Andrey V. Panov (panov@canopus.iacp.dvo.ru),
-    with Reserved Font Name Heuristica.
-
-    Licensed under the SIL Open Font License, Version 1.1.
-    See Heuristica-LICENSE.txt.
-
 * rustdoc.css, main.js, and playpen.js:
 
     Copyright 2015 The Rust Developers.
@@ -47,7 +32,8 @@ included, and carry their own copyright notices and license terms:
     Licensed under the SIL Open Font License, Version 1.1.
     See SourceCodePro-LICENSE.txt.
 
-* Source Serif Pro (SourceSerifPro-Regular.woff, SourceSerifPro-Bold.woff):
+* Source Serif Pro (SourceSerifPro-Regular.ttf.woff,
+    SourceSerifPro-Bold.ttf.woff, SourceSerifPro-It.ttf.woff):
 
     Copyright 2014 Adobe Systems Incorporated (http://www.adobe.com/), with
     Reserved Font Name 'Source'. All Rights Reserved. Source is a trademark of

src/librustdoc/html/static/Heuristica-Italic.woff

@@ -12,25 +12,24 @@
 	src: local('Fira Sans Medium'), url("FiraSans-Medium.woff") format('woff');
 }
 
-/* See SourceSerifPro-LICENSE.txt for the Source Serif Pro license and
- * Heuristica-LICENSE.txt for the Heuristica license. */
+/* See SourceSerifPro-LICENSE.txt for the Source Serif Pro license. */
 @font-face {
 	font-family: 'Source Serif Pro';
 	font-style: normal;
 	font-weight: 400;
-	src: local('Source Serif Pro'), url("SourceSerifPro-Regular.woff") format('woff');
+	src: local('Source Serif Pro'), url("SourceSerifPro-Regular.ttf.woff") format('woff');
 }
 @font-face {
 	font-family: 'Source Serif Pro';
 	font-style: italic;
 	font-weight: 400;
-	src: url("Heuristica-Italic.woff") format('woff');
+	src: local('Source Serif Pro Italic'), url("SourceSerifPro-It.ttf.woff") format('woff');
 }
 @font-face {
 	font-family: 'Source Serif Pro';
 	font-style: normal;
 	font-weight: 700;
-	src: local('Source Serif Pro Bold'), url("SourceSerifPro-Bold.woff") format('woff');
+	src: local('Source Serif Pro Bold'), url("SourceSerifPro-Bold.ttf.woff") format('woff');
 }
 
 /* See SourceCodePro-LICENSE.txt for the Source Code Pro license. */