Bump Xamarin.Essentials from 1.7.6 to 1.7.7 (#194)

Bumps [Xamarin.Essentials](https://github.com/xamarin/Essentials) from 1.7.6 to 1.7.7.
- [Release notes](https://github.com/xamarin/Essentials/releases)
- [Commits](xamarin/Essentials@1.7.6...1.7.7)

---
updated-dependencies:
- dependency-name: Xamarin.Essentials
  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>

SharpXMPP.Xamarin/SharpXMPP.Client.Droid/SharpXMPP.Client.Droid.csproj

@@ -71,7 +71,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Xamarin.Forms" Version="5.0.0.2578" />
-    <PackageReference Include="Xamarin.Essentials" Version="1.7.6" />
+    <PackageReference Include="Xamarin.Essentials" Version="1.7.7" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="MainActivity.cs" />