build(deps): bump github.com/elastic/opentelemetry-collector-components/connector/elasticapmconnector from 0.8.0 to 0.20.0 (#10779)

* build(deps): bump github.com/elastic/opentelemetry-collector-components/connector/elasticapmconnector

Bumps [github.com/elastic/opentelemetry-collector-components/connector/elasticapmconnector](https://github.com/elastic/opentelemetry-collector-components) from 0.8.0 to 0.20.0.
- [Release notes](https://github.com/elastic/opentelemetry-collector-components/releases)
- [Changelog](https://github.com/elastic/opentelemetry-collector-components/blob/main/docs/release.md)
- [Commits](elastic/opentelemetry-collector-components@extension/apmconfigextension/v0.8.0...receiver/loadgenreceiver/v0.20.0)

---
updated-dependencies:
- dependency-name: github.com/elastic/opentelemetry-collector-components/connector/elasticapmconnector
  dependency-version: 0.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

* Update NOTICE.txt and/or NOTICE-fips.txt

* Update otel README.md

---------

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

Author: dependabot[bot]