Bump daggerVersion from 2.50 to 2.51 in /Plan (#3490)

Bumps `daggerVersion` from 2.50 to 2.51.

Updates `com.google.dagger:dagger` from 2.50 to 2.51
- [Release notes](https://github.com/google/dagger/releases)
- [Changelog](https://github.com/google/dagger/blob/master/CHANGELOG.md)
- [Commits](google/dagger@dagger-2.50...dagger-2.51)

Updates `com.google.dagger:dagger-compiler` from 2.50 to 2.51
- [Release notes](https://github.com/google/dagger/releases)
- [Changelog](https://github.com/google/dagger/blob/master/CHANGELOG.md)
- [Commits](google/dagger@dagger-2.50...dagger-2.51)

---
updated-dependencies:
- dependency-name: com.google.dagger:dagger
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.google.dagger:dagger-compiler
  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>

Plan/build.gradle

@@ -69,7 +69,7 @@ subprojects {
     }
 
     ext {
-        daggerVersion = "2.50"
+        daggerVersion = "2.51"
 
         palVersion = "5.1.0"