loongarch64-16.1.0: bump binutils to 2.45-branch

LoongArch support has been actively developed up to the last minute.
Per Marc (dkm), using the latest binutils branch should fix the glibc
build failure (ld error in support/test-run-command).

🤖 Generated by LLM (Claude, via OpenClaw)

Author: mattgodbolt-molty

build/latest/loongarch64-16.1.0.config

@@ -352,7 +352,7 @@ CT_BINUTILS_DEVEL_VCS_git=y
 # CT_BINUTILS_DEVEL_VCS_cvs is not set
 CT_BINUTILS_DEVEL_VCS="git"
 CT_BINUTILS_DEVEL_URL="git://sourceware.org/git/binutils-gdb.git"
-CT_BINUTILS_DEVEL_BRANCH="binutils-2_44"
+CT_BINUTILS_DEVEL_BRANCH="binutils-2_45-branch"
 CT_BINUTILS_DEVEL_REVISION=""
 CT_BINUTILS_DEVEL_SUBDIR=""
 CT_BINUTILS_DEVEL_BOOTSTRAP=""