Update vertx.version to v4.0.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
io.vertx:vertx-junit5	4.0.2 -> 4.0.3
io.vertx:vertx-web	4.0.2 -> 4.0.3

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[codecov]

Codecov Report

Merging #2263 (a3a0e73) into main (123aa2f) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main    #2263   +/-   ##
=========================================
  Coverage     83.10%   83.10%           
  Complexity     2352     2352           
=========================================
  Files           307      307           
  Lines          8370     8370           
  Branches        770      770           
=========================================
  Hits           6956     6956           
  Misses         1110     1110           
  Partials        304      304           

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