Bump RNTester Cocoapods cache keys after SocketRocket 6.1.0 bump (#40789

)

Summary:
Commit 8b88883 broke the Cache for RNTester because the cached version of the pods does not know about the exitence of SocketRocket 6.1.0
Bumping the keys should force a redownload of the cocoapods specs repo

## Changelog:
[Internal] - Bump RNTester cache keys

Pull Request resolved: #40789

Test Plan: CircleCI is green

Reviewed By: GijsWeterings

Differential Revision: D50169281

Pulled By: cipolleschi

fbshipit-source-id: 83e251495bfa43d62384470efe97c5505d76684f

# Conflicts:
#	packages/rn-tester/Podfile.lock

.circleci/configurations/top_level.yml

@@ -91,8 +91,8 @@ references:
     hermes_dsym_release_cache_key: &hermes_dsym_release_cache_key v1-hermes-release-dsym-{{ checksum "/tmp/hermes/hermesversion" }}-{{ checksum "/tmp/react-native-version" }}
     # Cocoapods - RNTester
     pods_cache_key: &pods_cache_key v10-pods-{{ .Environment.CIRCLE_JOB }}-{{ checksum "packages/rn-tester/Podfile.lock.bak" }}-{{ checksum "packages/rn-tester/Podfile" }}
-    cocoapods_cache_key: &cocoapods_cache_key v8-cocoapods-{{ .Environment.CIRCLE_JOB }}-{{ checksum "packages/rn-tester/Podfile.lock" }}-{{ checksum "packages/rn-tester/Podfile" }}-{{ checksum "/tmp/hermes/hermesversion" }}
-    rntester_podfile_lock_cache_key: &rntester_podfile_lock_cache_key v6-podfilelock-{{ .Environment.CIRCLE_JOB }}-{{ checksum "packages/rn-tester/Podfile" }}-{{ checksum "/tmp/week_year" }}-{{ checksum "/tmp/hermes/hermesversion" }}
+    cocoapods_cache_key: &cocoapods_cache_key v9-cocoapods-{{ .Environment.CIRCLE_JOB }}-{{ checksum "packages/rn-tester/Podfile.lock" }}-{{ checksum "packages/rn-tester/Podfile" }}-{{ checksum "/tmp/hermes/hermesversion" }}
+    rntester_podfile_lock_cache_key: &rntester_podfile_lock_cache_key v7-podfilelock-{{ .Environment.CIRCLE_JOB }}-{{ checksum "packages/rn-tester/Podfile" }}-{{ checksum "/tmp/week_year" }}-{{ checksum "/tmp/hermes/hermesversion" }}
 
     # Cocoapods - Template
     template_cocoapods_cache_key: &template_cocoapods_cache_key v4-cocoapods-{{ .Environment.CIRCLE_JOB }}-{{ checksum "/tmp/iOSTemplateProject/ios/Podfile.lock" }}-{{ checksum "/tmp/iOSTemplateProject/ios/Podfile" }}-{{ checksum "/tmp/hermes/hermesversion" }}-{{ checksum "packages/rn-tester/Podfile.lock }}