Update derive_builder requirement from 0.12.0 to 0.20.1

---
updated-dependencies:
- dependency-name: derive_builder
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -48,7 +48,7 @@ derive_deref = "1.1.1"
 derive_is_enum_variant = "0.1.1"
 
 [dependencies.derive_builder]
-version = "0.12.0"
+version = "0.20.1"
 features = ["clippy"]
 
 [dependencies.parse_link_header]