chore(deps): update dependency graphql-sse to v2.5.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
graphql-sse	2.5.2 -> 2.5.3

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Release Notes

enisdenjo/graphql-sse (graphql-sse)

v2.5.3

Compare Source

Bug Fixes

• use/fastify: Include middleware headers (134c1b0), closes #​91

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