🐛 fix dict translation for cloudrun service traffic

[vjeffrey]

before

    traffic: failed to convert dict to primitive, unsupported child type: int32

after

    traffic: [
      0: {
        percent: "100"
        revision: ""
        tag: ""
        type: "TRAFFIC_TARGET_ALLOCATION_TYPE_LATEST"
      }
    ]

[github-actions]

Test Results

3 208 tests  ±0   3 204 ✅ ±0   1m 51s ⏱️ -6s
  379 suites ±0       4 💤 ±0 
   29 files   ±0       0 ❌ ±0 

Results for commit d300a18. ± Comparison against base commit 41b6963.