[firebaseai] Fix SPM build for pre-released analytics (#1701)

Author: paulb777

.github/workflows/firebaseai.yml

@@ -4,6 +4,7 @@ on:
   pull_request:
     paths:
     - 'firebaseai/**'
+    - '.github/workflows/firebaseai.yml'
   schedule:
     # Run every day at 11pm (PST) - cron uses UTC times
     - cron:  '0 7 * * *'
@@ -15,6 +16,7 @@ concurrency:
 
 env:
   SAMPLE: FirebaseAI
+  FIREBASECI_USE_LATEST_GOOGLEAPPMEASUREMENT: 1
 
 jobs:
   spm: