Dep/fmt: update fmt library to 7.0.3

# Conflicts:
#	dep/PackageList.txt
#	dep/fmt/CMakeLists.txt
#	src/common/Utilities/StringFormat.h

dep/PackageList.txt

@@ -1,4 +1,4 @@
-TrinityCore uses (parts of or in whole) the following opensource software :
+TrinityCore uses (parts of or in whole) the following opensource software:
 
 Boost (external)
   http://www.boost.org
@@ -22,7 +22,7 @@ efws (Entropia File System Watcher - crossplatform file system watcher)
 
 fmt (a small, safe and fast formatting library)
   https://github.com/fmtlib/fmt
-  Version: 4.0.0 f9c97de46b9914c86366ddcb3474a36e654cbd42
+  Version: 7.0.3 https://github.com/fmtlib/fmt/releases/tag/7.0.3
 
 G3D (a commercial-grade C++ 3D engine available as Open Source (BSD License)
   http://g3d.sourceforge.net/