fix(deps): update dependency org.osmdroid:osmdroid-android to v6.1.20

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

app/build.gradle

@@ -355,7 +355,7 @@ dependencies {
     // dependencies for image cropping and rotation
     implementation 'com.vanniktech:android-image-cropper:4.6.0'
 
-    implementation 'org.osmdroid:osmdroid-android:6.1.18'
+    implementation 'org.osmdroid:osmdroid-android:6.1.20'
 
     implementation('org.mnode.ical4j:ical4j:3.0.0') {
         ['org.apache.commons', 'commons-logging'].each {

gradle/verification-metadata.xml

@@ -103,6 +103,7 @@
          <trusted-key id="3A1AAFA9B89A1D1DDD5F3A4B98AD2E19BFF4106D">
             <trusting group="org.osmdroid" name="osmdroid-android" version="6.1.16"/>
             <trusting group="org.osmdroid" name="osmdroid-android" version="6.1.18"/>
+            <trusting group="org.osmdroid" name="osmdroid-android" version="6.1.20"/>
          </trusted-key>
          <trusted-key id="3D9CDB50E2EAB3AA068D74A188518C11ADAEFC68">
             <trusting group="pl.droidsonroids.gif" name="android-gif-drawable" version="1.2.27"/>