License handling with rules_license, and upgrade SDL

vendor/vulkan/BUILD.bazel

@@ -2,6 +2,18 @@
 #
 # SPDX-License-Identifier: BSD-3-Clause
 
+load("@rules_license//rules:license.bzl", "license")
+
+license(
+    name = "license",
+    license_kinds = [
+        "@rules_license//licenses/spdx:Apache-2.0",
+    ],
+    license_text = "LICENSE.txt",
+    package_name = "Vulkan",
+    package_url = "https://github.com/KhronosGroup/Vulkan-Docs",
+)
+
 cc_library(
     name = "vulkan",
     hdrs = [
@@ -13,4 +25,5 @@ cc_library(
         ".",
     ],
     visibility = ["//:__subpackages__"],
+    applicable_licenses = [":license"],
 )