Update package version to 2026.4

info.yml

@@ -1,6 +1,6 @@
 name: shaderc
 description: A collection of tools, libraries, and tests for Vulkan shader compilation
-version: "2026.3"
+version: "2026.4"
 revision: 1
 url: https://github.com/google/shaderc
 license: Apache-2.0
@@ -22,4 +22,4 @@ downloads:
   - url: https://github.com/google/shaderc/archive/v${BPM_PKG_VERSION}/shaderc-${BPM_PKG_VERSION}.tar.gz
     extract_to: ${BPM_SOURCE}
     extract_strip_components: 1
-    checksum: ee493ccf1b3038b4ef2fe024664c5eb2dc4bcc1f6b05b33e3909de0e19c81024
+    checksum: f06ce5bcca94e5df7f34e115743597d0ad2e13c5fe9213c67dc8c76031241947