update planus version and regenerate code

[Liyixin95]

Update planus from 0.3.x to 0.4.x will simplify the conversion from BlockRef to Block.

This is 0.4.x version:

impl<'a> ::core::convert::From<BlockRef<'a>> for Block {
          #[allow(unreachable_code)]
          fn from(value: BlockRef<'a>) -> Self {
              Self {
                  offset: value.offset(),
                  meta_data_length: value.meta_data_length(),
                  body_length: value.body_length(),
              }
          }
      }

This is 0.3.x version:

impl<'a> ::core::convert::TryFrom<BlockRef<'a>> for Block {
                        type Error = ::planus::Error;

                        #[allow(unreachable_code)]
                        fn try_from(value: BlockRef<'a>) -> ::planus::Result<Self> {
                            ::core::result::Result::Ok(Block {
                                offset: value.offset(),
                                meta_data_length: value.meta_data_length(),
                                body_length: value.body_length(),
                            })
                        }
                    }

This will simplify the deserialize_footer function in arrow2 a little bit.