MDL-70291 core: Update lib readme, upgrade and xml files

lib/minify/readme_moodle.txt

@@ -11,13 +11,16 @@ mv path-converter-1.1.0/src/ /path/to/moodle/lib/minify/matthiasmullie-pathconve
 
 Local changes applied:
 
-MDL-67115: php 74 compliance - implode() params order. Note this has been fixed upstream
-  by https://github.com/matthiasmullie/minify/pull/300 so, whenever this library is updated
-  check if the fix is included and remove this note.
-
 MDL-68191: https://github.com/matthiasmullie/minify/issues/317 is a bug that stops
   large sections of the CSS from being minimised, and also is a huge performance drain.
   We have applied the fix sent upstream because the performance win is so big.
   (E.g. one case I measured, with the bug was 40 seconds to minify CSS, with the fix was
   a few seconds. This is one of the reasons Behat runs in the browser are so slow.)
   Whenever this library is updated check if the fix is included and remove this note.
+  NOTE: As of 2020/12/08, only the first commit was brought into Moodle
+
+
+2020-12-07 - Peter Dias
+-----------------------
+* Removed php74 compliance step as it is now part of the library
+* Updated minify to 1.3.63 and pathconverter to 1.1.3

lib/thirdpartylibs.xml

@@ -60,14 +60,14 @@
     <location>minify/matthiasmullie-minify</location>
     <name>MatthiasMullie\Minify</name>
     <license>MIT</license>
-    <version>1.3.61</version>
+    <version>1.3.63</version>
     <licenseversion></licenseversion>
   </library>
   <library>
     <location>minify/matthiasmullie-pathconverter</location>
     <name>MatthiasMullie\PathConverter</name>
     <license>MIT</license>
-    <version>1.1.2</version>
+    <version>1.1.3</version>
     <licenseversion></licenseversion>
   </library>
   <library>

lib/upgrade.txt

@@ -15,6 +15,7 @@ information provided here is intended especially for developers.
 * Behat timeout constants behat_base::TIMEOUT, EXTENDED_TIMEOUT, and REDUCED_TIMEOUT, which were deprecated in 3.7, have been removed.
 * \core_table\local\filter\filterset::JOINTYPE_DEFAULT is being changed from 1 (ANY) to 2 (ALL). Filterset implementations
   can override the default filterset join type by overriding \core_table\local\filter\filterset::get_join_type() instead.
+* The minify lib has been upgraded to 1.3.63 and pathconvertor to 1.1.3
 
 === 3.10 ===
 * PHPUnit has been upgraded to 8.5. That comes with a few changes: