build zlib-rs, crc32fast with opt-level=3 in dev (#43789)

These use a lot of CPU time in tests

GitOrigin-RevId: 42b97b15ebeff2b2407c7ea9d8cd1956a3090a86

Author: goffrie

Cargo.toml

@@ -327,5 +327,13 @@ codegen-units = 16
 opt-level = 3
 codegen-units = 16
 
+[profile.dev.package.zlib-rs]
+opt-level = 3
+codegen-units = 16
+
+[profile.dev.package.crc32fast]
+opt-level = 3
+codegen-units = 16
+
 [profile.release.package.segment]
 overflow-checks = false