fix(deps): update dependency com.github.bitfireat:dav4jvm to v2.2.1

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

Author: renovate[bot]

app/build.gradle

@@ -218,7 +218,7 @@ dependencies {
     implementation "androidx.work:work-rxjava2:${workVersion}"
     implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
     implementation 'com.google.android.flexbox:flexbox:3.0.0'
-    implementation ('com.github.bitfireAT:dav4jvm:2.1.3', {
+    implementation ('com.github.bitfireAT:dav4jvm:2.2.1', {
         exclude group: 'org.ogce', module: 'xpp3'	// Android comes with its own XmlPullParser
     })
     implementation 'org.conscrypt:conscrypt-android:2.5.3'

gradle/verification-metadata.xml

@@ -315,6 +315,7 @@
             <trusting group="org.apache.commons" name="commons-parent" version="52"/>
          </trusted-key>
          <trusted-key id="B801E2F8EF035068EC1139CC29579F18FA8FD93B" group="com.google.j2objc" name="j2objc-annotations" version="1.3"/>
+         <trusted-key id="B8CBA850DDC1ADAC674FF8E1D3DBC823BE4819ED" group="de.undercouch" name="gradle-download-task" version="5.6.0"/>
          <trusted-key id="BC87A3FD0A54480F0BADBEBD21939FF0CA2A6567" group="commons-codec" name="commons-codec" version="1.15"/>
          <trusted-key id="BCC135FC7ED8214F823D73E97FE9900F412D622E" group="com.google.flatbuffers" name="flatbuffers-java" version="1.12.0"/>
          <trusted-key id="BD5C053B4D49EED4ECDBB48C04C39AD208277F6A" group="io.github.elye" name="loaderviewlibrary" version="3.0.0"/>