… in Unity

Avoid copying data twice in MessagePackWriter.MemoryCopy when running…

Bumps [Nerdbank.GitVersioning](https://github.com/dotnet/Nerdbank.GitVersioning) from 3.5.119 to 3.6.128.
- [Release notes](https://github.com/dotnet/Nerdbank.GitVersioning/releases)
- [Commits](dotnet/Nerdbank.GitVersioning@v3.5.119...v3.6.128)

---
updated-dependencies:
- dependency-name: Nerdbank.GitVersioning
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Bumps [Microsoft.Build.Locator](https://github.com/microsoft/MSBuildLocator) from 1.4.1 to 1.5.5.
- [Release notes](https://github.com/microsoft/MSBuildLocator/releases)
- [Commits](https://github.com/microsoft/MSBuildLocator/commits)

---
updated-dependencies:
- dependency-name: Microsoft.Build.Locator
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

…1612)

Bumps [Microsoft.CodeAnalysis.PublicApiAnalyzers](https://github.com/dotnet/roslyn-analyzers) from 3.3.3 to 3.3.4.
- [Release notes](https://github.com/dotnet/roslyn-analyzers/releases)
- [Changelog](https://github.com/dotnet/roslyn-analyzers/blob/main/PostReleaseActivities.md)
- [Commits](dotnet/roslyn-analyzers@v3.3.3...v3.3.4)

---
updated-dependencies:
- dependency-name: Microsoft.CodeAnalysis.PublicApiAnalyzers
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Merge master into develop

The source generator package was depending on the non-existant MessagePack.Analyzers.Only package.

Bumps [NUnit3TestAdapter](https://github.com/nunit/nunit3-vs-adapter) from 4.3.1 to 4.4.2.
- [Release notes](https://github.com/nunit/nunit3-vs-adapter/releases)
- [Commits](nunit/nunit3-vs-adapter@V4.3.1...V4.4.2)

---
updated-dependencies:
- dependency-name: NUnit3TestAdapter
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Bumps [System.Collections.Immutable](https://github.com/dotnet/runtime) from 6.0.0 to 7.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v6.0.0...v7.0.0)

---
updated-dependencies:
- dependency-name: System.Collections.Immutable
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

The indexer was throwing when it should instead return an empty sequence.

Fixes #1431

Fix the errant package dependency in source generator package

Fix `ILookup<TKey, TElement>` deserialized behavior