update rspirv: adjusted tests

Author: Firestar99

crates/rustc_codegen_spirv/src/linker/test.rs

@@ -275,7 +275,7 @@ fn standard() {
         OpMemoryModel Logical OpenCL
         OpDecorate %1 LinkageAttributes "foo" Export
         %2 = OpTypeFloat 32
-        %3 = OpConstant %2 42.0
+        %3 = OpConstant %2 42
         %1 = OpVariable %2 Uniform %3"#;
 
     without_header_eq(result, expect);