[c++] update to fmt 11.1.2, fast_double_parser 0.8.0 (#6802)

CMakeLists.txt

@@ -336,7 +336,8 @@ if(WIN32)
 endif()
 
 if(MSVC)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4 /MP")
+    # compiling 'fmt' on MSVC: "Unicode support requires compiling with /utf-8"
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4 /MP /utf-8")
     if(__BUILD_FOR_R)
         # MSVC does not like this commit:
         # https://github.com/wch/r-source/commit/fb52ac1a610571fcb8ac92d886b9fefcffaa7d48

R-package/.Rbuildignore

@@ -4,6 +4,7 @@ AUTOCONF_UBUNTU_VERSION
 ^.*\.bin
 ^build_r.R$
 \.clang-format
+^.*\.clusterfuzzlite$
 ^cran-comments\.md$
 ^docs$
 ^.*\.dll

fast_double_parser @ 252029dd

-Subproject commit efec03532ef65984786e5e32dbc81f6e6a55a115
+Subproject commit 252029ddac664370bdda3f0761675785d92a1573

fmt @ 8303d140

-Subproject commit f5e54359df4c26b6230fc61d38aa294581393084
+Subproject commit 8303d140a1a11f19b982a9f664bbe59a1ccda3f4