AltPods: pods updated - 1.52.0-SNAPSHOT

AltPods were updated to v1.52.0-SNAPSHOT to sync with recent releases.

Updated pods (ones with API changed)

• InMobi v10.8.3 -> v10.8.6
• IronSource v8.9.1 -> v8.10.0

Updates without any API change

• Facebook iOS Audience updated: v6.20.0 -> v6.20.1
• Branch Metrics updated: v3.12.1 -> v3.12.2
• Tenjin updated: v1.14.10 -> v1.14.11
• Unity updated: v4.15.1 -> v4.16.0
• CleverAds updated: v4.1.2 -> v4.3.0
• Google Mobile Ads updated to v12.7.0 -> v12.8.0

• Firebase updated to v12.0.0 -> v12.1.0

• These pods were pushed to https://central.sonatype.com/repository/maven-snapshots/ maven repo under 1.52.0-SNAPSHOTS version. Source code @github

Updates are not fully tested, please open issue if bug found.