Fix vulkan dual source blending

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1856283003

Review URL: https://codereview.chromium.org/1856283003
diff --git a/src/gpu/vk/GrVkCaps.cpp b/src/gpu/vk/GrVkCaps.cpp
index 7a1577e..b72a512 100644
--- a/src/gpu/vk/GrVkCaps.cpp
+++ b/src/gpu/vk/GrVkCaps.cpp
@@ -127,7 +127,8 @@
 void GrVkCaps::initGLSLCaps(const VkPhysicalDeviceProperties& properties,
                             uint32_t featureFlags) {
     GrGLSLCaps* glslCaps = static_cast<GrGLSLCaps*>(fShaderCaps.get());
-    glslCaps->fVersionDeclString = "#version 310 es\n";
+    glslCaps->fVersionDeclString = "#version 330\n";
+
 
     // fConfigOutputSwizzle will default to RGBA so we only need to set it for alpha only config.
     for (int i = 0; i < kGrPixelConfigCnt; ++i) {