Update to Cadence v0.18

[turbolent]

Description

Fixes

# github.com/onflow/cadence/runtime/interpreter
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/decode.go:43:18: undefined: cbor.StreamDecoder
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/decode.go:99:26: decMode.NewStreamDecoder undefined (type cbor.DecMode has no field or method NewStreamDecoder)
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/decode.go:117:26: decMode.NewByteStreamDecoder undefined (type cbor.DecMode has no field or method NewByteStreamDecoder)
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/decode.go:157:7: undefined: cbor.BoolType
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/decode.go:164:7: undefined: cbor.TextStringType
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/decode.go:171:7: undefined: cbor.NilType
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/decode.go:178:7: undefined: cbor.ArrayType
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/decode.go:181:7: undefined: cbor.TagType
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/decode.go:348:21: undefined: cbor.WrongTypeError
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/encode.go:199:19: undefined: cbor.StreamEncoder
../../../go/pkg/mod/github.com/onflow/cadence@v0.16.1/runtime/interpreter/decode.go:348:21: too many errors

See report from https://forum.onflow.org/t/unable-to-go-get-flow-go-sdk/1931

---

For contributor use:

• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the standards mentioned here.
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[turbolent]

I've updated this further to Cadence 0.18, in particular the latest internal patch, which changed cadence.NewString.

We need to hold off merging this PR until we published the internal patches