Fix java8Time in Event

[Andyz26]

Context

Fix publish event toJson with Java8 Instant type.

Checklist

• ./gradlew build compiles code correctly
• Added new tests where applicable
• ./gradlew test passes all tests
• Extended README or added javadocs where applicable

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Uploaded Artifacts

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[github-actions]

Test Results

126 files  ±0  126 suites  ±0   6m 24s ⏱️ +8s
535 tests +1  525 ✔️ ±0  8 💤 ±0  2 ❌ +1 
537 runs  +2  527 ✔️ +1  8 💤 ±0  2 ❌ +1 

For more details on these failures, see this check.

Results for commit d27cdc8. ± Comparison against base commit 10c7615.