Bump System.Text.Json in /src/Foundatio.Parsers.ElasticQueries (#81)

Bumps System.Text.Json from 6.0 to 8.0.4.

---
updated-dependencies:
- dependency-name: System.Text.Json
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Eric J. Smith <[email protected]>

Author: dependabot[bot]