message: doc: Update minimum required qt
diff: @@ -3,15 +3,15 @@ Dependencies
  These are the dependencies currently used by Bitcoin Core. You can find instructions for installing them in the `build-*.md` file for your platform.
  -| Dependency | Version used | Minimum required | CVEs | Shared | [Bundled Qt library](https://doc.qt.io/qt-5/configure-options.html) |
  +| Dependency | Version used | Minimum required | CVEs | Shared | [Bundled Qt library](https://doc.qt.io/qt-5/configure-options.html#third-party-libraries) |
  | --- | --- | --- | --- | --- | --- |
  -| Berkeley DB | [4.8.30](http://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html) | 4.8.x | No | | |
  +| Berkeley DB | [4.8.30](https://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html) | 4.8.x | No | | |
  | Boost | [1.64.0](https://www.boost.org/users/download/) | [1.47.0](https://github.com/bitcoin/bitcoin/pull/8920) | No | | |
  | Clang | | [3.3+](https://llvm.org/releases/download.html) (C++11 support) | | | |
  | D-Bus | [1.10.18](https://cgit.freedesktop.org/dbus/dbus/tree/NEWS?h=dbus-1.10) | | No | Yes | |
  | Expat | [2.2.5](https://libexpat.github.io/) | | No | Yes | |
  | fontconfig | [2.12.1](https://www.freedesktop.org/software/fontconfig/release/) | | No | Yes | |
  -| FreeType | [2.7.1](http://download.savannah.gnu.org/releases/freetype) | | No | | |
  +| FreeType | [2.7.1](https://download.savannah.gnu.org/releases/freetype) | | No | | |
  | GCC | | [4.8+](https://gcc.gnu.org/) (C++11 support) | | | |
  | HarfBuzz-NG | | | | | |
  | libevent | [2.1.8-stable](https://github.com/libevent/libevent/releases) | 2.0.22 | No | | |
  @@ -23,7 +23,7 @@ These are the dependencies currently used by Bitcoin Core. You can find instruct
  | protobuf | [2.6.1](https://github.com/google/protobuf/releases) | | No | | |
  | Python (tests) | | [3.4](https://www.python.org/downloads) | | | |
  | qrencode | [3.4.4](https://fukuchi.org/works/qrencode) | | No | | |
  -| Qt | [5.9.6](https://download.qt.io/official_releases/qt/) | 5.x | No | | |
  +| Qt | [5.9.6](https://download.qt.io/official_releases/qt/) | [5.2](https://github.com/bitcoin/bitcoin/pull/14725) | No | | |
  | XCB | | | | | [Yes](https://github.com/bitcoin/bitcoin/blob/master/depends/packages/qt.mk#L87) (Linux only) |
  | xkbcommon | | | | | [Yes](https://github.com/bitcoin/bitcoin/blob/master/depends/packages/qt.mk#L86) (Linux only) |
  | ZeroMQ | [4.2.5](https://github.com/zeromq/libzmq/releases) | 4.0.0 | No | | |
  