fix(deps): update dependency apollo-link-ws to v1.0.19

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
apollo-link-ws	dependencies	patch	1.0.18 -> 1.0.19

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Release Notes

apollographql/apollo-link

### [`v1.0.19`](https://togithub.com/apollographql/apollo-link/compare/apollo-link-ws@1.0.18...apollo-link-ws@1.0.19) [Compare Source](https://togithub.com/apollographql/apollo-link/compare/apollo-link-ws@1.0.18...apollo-link-ws@1.0.19)

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