[chore] Promote @VihasMakwana to triager (open-telemetry#36257)

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#### Description

Promote @VihasMakwana to triager.

- PRs reviewed:
https://github.com/open-telemetry/opentelemetry-collector-contrib/pulls?q=is%3Apr+reviewed-by%3AVihasMakwana+
- PRs authored:
https://github.com/open-telemetry/opentelemetry-collector-contrib/pulls?q=is%3Apr+author%3AVihasMakwana+
- Issues created:
https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aissue+author%3AVihasMakwana+
- Issues commented:
https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aissue+commenter%3AVihasMakwana+
- Commits:
https://github.com/open-telemetry/opentelemetry-collector-contrib/commits?author=VihasMakwana&since=2023-05-31&until=now

Fixes open-telemetry#36025

cc @open-telemetry/collector-triagers

README.md

@@ -73,6 +73,7 @@ Triagers ([@open-telemetry/collector-contrib-triagers](https://github.com/orgs/o
 - [Jared Tan](https://github.com/JaredTan95), DaoCloud
 - [Murphy Chen](https://github.com/Frapschen), DaoCloud
 - [Paulo Janotti](https://github.com/pjanotti), Splunk
+- [Vihas Makwana](https://github.com/VihasMakwana), Elastic
 - Actively seeking contributors to triage issues
 
 Emeritus Triagers: