refactor: point Qt URL to archives subdirectory

As of this commit, Qt <6.5 are considered historical versions, which
are located at a different path. Adjust accordingly.

Author: kwvg

depends/packages/qt.mk

@@ -1,6 +1,6 @@
 package=qt
 $(package)_version=5.15.14
-$(package)_download_path=https://download.qt.io/official_releases/qt/5.15/$($(package)_version)/submodules
+$(package)_download_path=https://download.qt.io/archive/qt/5.15/$($(package)_version)/submodules
 $(package)_suffix=everywhere-opensource-src-$($(package)_version).tar.xz
 $(package)_file_name=qtbase-$($(package)_suffix)
 $(package)_sha256_hash=500d3b390048e9538c28b5f523dfea6936f9c2e10d24ab46580ff57d430b98be