chore(deps): update dependency xamarin.androidx.fragment to 1.8.9 (#4138)

Coming soon: The Renovate bot (GitHub App) will be renamed to Mend. PRs
from Renovate will soon appear from 'Mend'. Learn more
[here](https://redirect.github.com/renovatebot/renovate/discussions/37842).

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
| [Xamarin.AndroidX.Fragment](https://aka.ms/android-libraries)
([source](https://redirect.github.com/xamarin/AndroidX)) | `1.8.8.1` ->
`1.8.9` |
[![age](https://developer.mend.io/api/mc/badges/age/nuget/Xamarin.AndroidX.Fragment/1.8.9?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/nuget/Xamarin.AndroidX.Fragment/1.8.8.1/1.8.9?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/reactiveui/ReactiveUI).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS45Ny4xMCIsInVwZGF0ZWRJblZlciI6IjQxLjk3LjEwIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJEZXBlbmRlbmN5IE1hbmFnZW1lbnQiXX0=-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/Directory.Packages.props

@@ -62,7 +62,7 @@
     <PackageVersion Include="Xamarin.AndroidX.Lifecycle.LiveData.Core.Ktx" Version="$(XamarinAndroidXLifecycleLiveDataVersion)" />
 
     <!-- Fragment/Collection/SavedState to match their latest constraints -->
-    <PackageVersion Include="Xamarin.AndroidX.Fragment" Version="1.8.8.1" />
+    <PackageVersion Include="Xamarin.AndroidX.Fragment" Version="1.8.9" />
     <PackageVersion Include="Xamarin.AndroidX.Fragment.Ktx" Version="1.8.9" />
     <PackageVersion Include="Xamarin.AndroidX.Collection.Jvm" Version="1.5.0.3" />
     <PackageVersion Include="Xamarin.AndroidX.Collection.Ktx" Version="1.5.0.3" />