Update to gql_link: ^0.3.0 and gql_http_link: ^0.2.9

[Feduch]

Hi!

Try get new updates for gql_link: ^0.3.0 and gql_http_link: ^0.2.9, and get in

Because gql_http_link >=0.2.9 depends on gql_link ^0.3.0 and lifext depends on gql_link ^0.2.3, gql_http_link >=0.2.9 is forbidden.

So, because lifext depends on gql_http_link ^0.2.9, version solving failed.
pub get failed (1; So, because lifext depends on gql_http_link ^0.2.9, version solving failed.)

If update only gql_link: ^0.3.0

Because ferry 0.3.0 depends on gql_link ^0.2.2 and no versions of ferry match >0.3.0 <0.4.0, ferry ^0.3.0 requires gql_link ^0.2.2.

If update only gql_http_link: ^0.2.9

Because gql_http_link >=0.2.9 depends on gql_link ^0.3.0 and lifext depends on gql_link ^0.2.3, gql_http_link >=0.2.9 is forbidden.