gdb: update to 16.2

See news file for changes:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=gdb/NEWS;hb=gdb-16.2-release

It fixes compilation with GCC15.

Link: https://github.com/openwrt/openwrt/pull/18519
Signed-off-by: Robert Marko <[email protected]>

toolchain/gdb/Makefile

@@ -7,12 +7,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gdb
-PKG_VERSION:=15.2
-PKG_RELEASE:=2
+PKG_VERSION:=16.2
+PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/gdb
-PKG_HASH:=83350ccd35b5b5a0cba6b334c41294ea968158c573940904f00b92f76345314d
+PKG_HASH:=4002cb7f23f45c37c790536a13a720942ce4be0402d929c9085e92f10d480119
 PKG_CPE_ID:=cpe:/a:gnu:gdb
 GDB_DIR:=$(PKG_NAME)-$(PKG_VERSION)