Update vertx to v5.1.5

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
io.vertx:vertx-lang-kotlin-coroutines (source)	5.1.4 → 5.1.5
io.vertx:vertx-lang-kotlin (source)	5.1.4 → 5.1.5
io.vertx:vertx-core (source)	5.1.4 → 5.1.5

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Release Notes

vert-x3/vertx-lang-kotlin (io.vertx:vertx-lang-kotlin-coroutines)

v5.1.5

Compare Source

eclipse/vert.x (io.vertx:vertx-core)

v5.1.5

Compare Source

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