fix: Updating UTP to fix Analyzers compile issue in 20.3

[andrews-unity]

Updating to UTP pre.9 to fix analyzer issue in 20.3

PR Checklist

• Have you added a backport label (if needed)? For example, the type:backport-release-* label. After you backport the PR, the label changes to stat:backported-release-*.
• Have you updated the changelog? Each package has a CHANGELOG.md file.
• Have you updated or added the documentation for your PR? When you add a new feature, change a property name, or change the behavior of a feature, it's best practice to include related documentation changes in the same PR or a link to the documenation repo PR if this is a manual update.

Changelog

com.unity.netcode.adapter.utp

• Changed: Updated to UTP to 1.0.0-pre.9

[0xFA11]

no longer needs to be backported, PR #1527 bumped the version number again