chore(deps): bump org.osmdroid:osmdroid-mapsforge from 6.1.18 to 6.1.20

Bumps [org.osmdroid:osmdroid-mapsforge](https://github.com/osmdroid/osmdroid) from 6.1.18 to 6.1.20.
- [Release notes](https://github.com/osmdroid/osmdroid/releases)
- [Changelog](https://github.com/osmdroid/osmdroid/blob/master/CHANGELOG.md)
- [Commits](osmdroid/osmdroid@osmdroid-parent-6.1.18...osmdroid-parent-6.1.20)

---
updated-dependencies:
- dependency-name: org.osmdroid:osmdroid-mapsforge
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

app/build.gradle.kts

@@ -105,7 +105,7 @@ dependencies {
 
     // Map libraries
     implementation("org.osmdroid:osmdroid-android:6.1.18")
-    implementation("org.osmdroid:osmdroid-mapsforge:6.1.18")
+    implementation("org.osmdroid:osmdroid-mapsforge:6.1.20")
     implementation("org.osmdroid:osmdroid-geopackage:6.1.18") {
         exclude("org.osmdroid.gpkg")
         exclude("ormlite-core")