Updated ical4j to `3.2.10` (#87)

    ext.versions = [

        kotlin: '1.7.21',

        dokka: '1.7.20',

        ical4j: '3.2.7',

        ical4j: '3.2.10',

        // latest Apache Commons versions that don't require Java 8 (Android 7)

        commonsIO: '2.6'

    ]

package at.bitfire.ical4android

import java.time.ZoneOffset

import java.util.Locale

import net.fortuna.ical4j.model.property.TzOffsetFrom

import org.junit.AfterClass

import org.junit.Assert.assertEquals

import org.junit.BeforeClass

import org.junit.ComparisonFailure

import org.junit.Test

import java.time.ZoneOffset

import java.util.*

class LocaleNonWesternDigitsTest {

        assertEquals("2020", String.format(Locale.ROOT, "%d", 2020))

    }

    @Test(expected = ComparisonFailure::class)      // should not fail in future

    @Test()

    fun testLocale_ical4j() {

        val offset = TzOffsetFrom(ZoneOffset.ofHours(1))

        val iCal = offset.toString()