android: add ability to override SDK version when releasing

android/scripts/release-sdk.sh

 DEFAULT_MVN_REPO="${THIS_DIR}/../../../jitsi-maven-repository/releases"
 THE_MVN_REPO=${MVN_REPO:-${1:-$DEFAULT_MVN_REPO}}
 MVN_HTTP=0
-SDK_VERSION=$(grep sdkVersion ${THIS_DIR}/../gradle.properties | cut -d"=" -f2)
+DEFAULT_SDK_VERSION=$(grep sdkVersion ${THIS_DIR}/../gradle.properties | cut -d"=" -f2)
+SDK_VERSION=${OVERRIDE_SDK_VERSION:-${DEFAULT_SDK_VERSION}}
 RN_VERSION=$(jq -r '.dependencies."react-native"' ${THIS_DIR}/../../package.json)
 
 if [[ $THE_MVN_REPO == http* ]]; then

android/sdk/build.gradle

         aarArchive(MavenPublication) {
             groupId 'org.jitsi.react'
             artifactId 'jitsi-meet-sdk'
-            version project.sdkVersion
+            version System.env.OVERRIDE_SDK_VERSION ?: project.sdkVersion
 
             artifact("${project.buildDir}/outputs/aar/${project.name}-release.aar") {
                 extension "aar"