svcb: fix build error

when running tests:
```
error[E0277]: the trait bound `Vec<u8>: From<&[u8; 5]>` is not satisfied
```

crates/proto/src/serialize/txt/rdata_parsers/svcb.rs

@@ -511,7 +511,7 @@ mod tests {
                 priority: 1,
                 params: vec![(
                     SvcParamKey::Key(667),
-                    SvcParamValue::Unknown(Unknown(b"hello".into())),
+                    SvcParamValue::Unknown(Unknown((*b"hello").into())),
                 )],
             },
             // Figure 6: A Generic Key and Quoted Value with a Decimal Escape
@@ -522,7 +522,7 @@ mod tests {
                 priority: 1,
                 params: vec![(
                     SvcParamKey::Key(667),
-                    SvcParamValue::Unknown(Unknown(b"hello\\210qoo".into())),
+                    SvcParamValue::Unknown(Unknown((*b"hello\\210qoo").into())),
                 )],
             },
             // Figure 7: Two Quoted IPv6 Hints