icu: update to 68.2

Maintainer: me
Compile tested: head r15324-920b692, aarch64, x86_64
Run tested: (qemu-5.2.0) aarch64

Description:
Update to 68.2

Signed-off-by: Hirokazu MORIKAWA <morikw2@gmail.com>

libs/icu/patches/002-Disable-LDFLAGSICUDT-for-Linux.patch

@@ -10,8 +10,6 @@ Signed-off-by: Khem Raj <raj.khem@gmail.com>
  source/config/mh-linux |    2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
 
-diff --git a/config/mh-linux b/config/mh-linux
-index 366f0cc..2689aab 100644
 --- a/config/mh-linux
 +++ b/config/mh-linux
 @@ -23,7 +23,7 @@ LD_RPATH= -Wl,-zorigin,-rpath,'$$'ORIGIN
@@ -23,6 +21,3 @@ index 366f0cc..2689aab 100644
  
  ## Compiler switch to embed a library name
  # The initial tab in the next line is to prevent icu-config from reading it.
--- 
-1.7.10.4
-