Updates `HeaderProvider` interface to also return error · smartcontractkit/chainlink-common@704d0c2

Process completed with exit code 2.

cannot use uint32(pluginType) (value of type uint32) as "github.com/smartcontractkit/chainlink-common/pkg/types/ccipocr3".PluginType value in struct literal

cannot use offrampAddrStr (variable of type string) as "github.com/smartcontractkit/chainlink-common/pkg/types/ccipocr3".UnknownAddress value in struct literal