toolchain: Update GCC to 11.3.0
diff --git a/make_toolchain.sh b/make_toolchain.sh
index 5636243d..b32412f6 100755
--- a/make_toolchain.sh
+++ b/make_toolchain.sh
@@ -9,7 +9,7 @@ cd "$srcdir"
TARGET=x86_64-elf
BINUTILSVERSION=2.38
-GCCVERSION=11.2.0
+GCCVERSION=11.3.0
NASMVERSION=2.15.05
if command -v gmake; then
