Update SPIR-V binary header test for SPIR-V 1.5 (#2967)

diff --git a/test/binary_header_get_test.cpp b/test/binary_header_get_test.cpp
index dcaf992..f8f6bdb 100644
--- a/test/binary_header_get_test.cpp
+++ b/test/binary_header_get_test.cpp
@@ -51,7 +51,8 @@
   ASSERT_EQ(SPV_SUCCESS, spvBinaryHeaderGet(&const_bin, endian, &header));
 
   ASSERT_EQ(static_cast<uint32_t>(SpvMagicNumber), header.magic);
-  ASSERT_EQ(0x00010400u, header.version);
+  // Expect SPIRV-Headers updated to SPIR-V 1.5.
+  ASSERT_EQ(0x00010500u, header.version);
   ASSERT_EQ(static_cast<uint32_t>(SPV_GENERATOR_CODEPLAY), header.generator);
   ASSERT_EQ(1u, header.bound);
   ASSERT_EQ(0u, header.schema);