Use GCC 10.2-2020.11 toolchain

This patch switches to GCC 10.2-2020.11 toolchain

Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Change-Id: Icfc82fffed40f368b95a8825d727922cb67dfd6e
diff --git a/utils.sh b/utils.sh
index 8902293..a69d5ea 100644
--- a/utils.sh
+++ b/utils.sh
@@ -357,7 +357,7 @@
 docker_registry="${docker_registry:-}"
 
 # Define toolchain version and toolchain binary paths
-toolchain_version="9.2-2019.12"
+toolchain_version="10.2-2020.11"
 
 aarch64_none_elf_dir="${nfs_volume}/pdsw/tools/gcc-arm-${toolchain_version}-x86_64-aarch64-none-elf"
 aarch64_none_elf_prefix="aarch64-none-elf-"