chore(deps): update dependency providers/flagd/test-harness to v2.13.0

[renovate]

This PR contains the following updates:

Package	Update	Change
providers/flagd/test-harness	minor	v2.11.1 -> v2.13.0

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Release Notes

open-feature/test-harness (providers/flagd/test-harness)

v2.13.0

Compare Source

✨ New Features

• Envoy connection lost test added (needs working targetURI) (#​300) (7565c27)

v2.12.0

Compare Source

🐛 Bug Fixes

• release please (#​298) (074fe66)
• release please (#​299) (3962ad3)
• replace githubaction with newer version (#​290) (95d0fa1)

✨ New Features

• add envoy via docker compose (#​283) (27b764b)

🧹 Chore

• add CODEOWNERS (89c9af6)
• add docker compose to release please config (#​284) (8580989)
• deps: update google-github-actions/release-please-action action to v4 (#​86) (690a2b4)
• fix version in docker compose for update (#​285) (de20bec)
• fix version in docker compose for update (#​286) (34bfe79)
• fix version in docker compose for update (#​287) (4233c92)

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