Source google-analytics-v4: fix pagination

[davydov-d]

What

https://github.com/airbytehq/oncall/issues/787

How

Retrieve the next page token from the first and the only object in the reports item of the response, not the root item.

[davydov-d]

/test connector=connectors/source-google-analytics-v4

🕑 connectors/source-google-analytics-v4 https://github.com/airbytehq/airbyte/actions/runs/3241957610
✅ connectors/source-google-analytics-v4 https://github.com/airbytehq/airbyte/actions/runs/3241957610
Python tests coverage:

Name                                     Stmts   Miss  Cover
------------------------------------------------------------
source_google_analytics_v4/__init__.py       2      0   100%
source_google_analytics_v4/source.py       296     20    93%
------------------------------------------------------------
TOTAL                                      298     20    93%
	 Name                                                 Stmts   Miss  Cover   Missing
	 ----------------------------------------------------------------------------------
	 source_acceptance_test/base.py                          10      4    60%   15-18
	 source_acceptance_test/config.py                        83      6    93%   78-80, 84-86
	 source_acceptance_test/conftest.py                     164    164     0%   6-282
	 source_acceptance_test/plugin.py                        48     48     0%   6-104
	 source_acceptance_test/tests/test_core.py              329    111    66%   39, 50-58, 63-70, 74-75, 79-80, 164, 202-219, 228-236, 240-245, 251, 284-289, 327-334, 374-376, 379, 439-448, 477-478, 484, 487, 520-530, 543-568, 573-577
	 source_acceptance_test/tests/test_full_refresh.py       52      2    96%   34, 65
	 source_acceptance_test/tests/test_incremental.py       145     20    86%   21-23, 29-31, 36-43, 48-61, 224
	 source_acceptance_test/utils/asserts.py                 37      2    95%   57-58
	 source_acceptance_test/utils/common.py                  77     10    87%   15-16, 24-30, 64, 67
	 source_acceptance_test/utils/compare.py                 62     23    63%   21-51, 68, 97-99
	 source_acceptance_test/utils/connector_runner.py       112     50    55%   23-26, 32, 36, 39-67, 70-72, 75-77, 80-82, 85-87, 90-92, 95-113, 147-149
	 source_acceptance_test/utils/json_schema_helper.py     105     13    88%   30-31, 38, 41, 65-68, 96, 120, 190-192
	 ----------------------------------------------------------------------------------
	 TOTAL                                                 1351    453    66%

Build Passed

Test summary info:

All Passed

[davydov-d]

/publish connector=connectors/source-google-analytics-v4

🕑 Publishing the following connectors:
connectors/source-google-analytics-v4
https://github.com/airbytehq/airbyte/actions/runs/3242192339

Connector	Did it publish?	Were definitions generated?
connectors/source-google-analytics-v4	✅	✅

if you have connectors that successfully published but failed definition generation, follow step 4 here ▶️