🐛 Source Github: add custom pagination size for large streams

[yevhenii-ldv]

Bug-fix Request

Fixes https://github.com/airbytehq/oncall/issues/75*

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Reason

Reduced pagination size for heavily loaded streams, as this can be a problem for reading these streams using the API (the case was in the PR #4708 where the page size values were already reduced for large streams).
I also added a parameter to the specification that allows the user to configure this parameter depending on the degree of load of his repositories

Confirmation

• Was reproduced locally

Described above

How does the code change in the PR fix the issue?

Described above

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Recommended reading order

1. x.java
2. y.python

🚨 User Impact 🚨

Are there any breaking changes? What is the end result perceived by the user? If yes, please merge this PR with the 🚨🚨 emoji so changelog authors can further highlight this if needed.

Pre-merge Checklist

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• Code reviews completed
• Documentation updated
  • Connector's README.md
  • Connector's bootstrap.md. See description and examples
  • Changelog updated in docs/integrations/<source or destination>/<name>.md including changelog. See changelog example
• PR name follows PR naming conventions

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If this is a community PR, the Airbyte engineer reviewing this PR is responsible for the below items.

• Create a non-forked branch based on this PR and test the below items on it
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[yevhenii-ldv]

/test connector=connectors/source-github

🕑 connectors/source-github https://github.com/airbytehq/airbyte/actions/runs/1725753957
✅ connectors/source-github https://github.com/airbytehq/airbyte/actions/runs/1725753957
Python tests coverage:

	 ---------- coverage: platform linux, python 3.8.10-final-0 -----------
	 Name                                                 Stmts   Miss  Cover
	 ------------------------------------------------------------------------
	 source_acceptance_test/__init__.py                       2      0   100%
	 source_acceptance_test/base.py                          10      4    60%
	 source_acceptance_test/config.py                        74      6    92%
	 source_acceptance_test/conftest.py                     109    109     0%
	 source_acceptance_test/plugin.py                        47     47     0%
	 source_acceptance_test/tests/__init__.py                 4      0   100%
	 source_acceptance_test/tests/test_core.py              242     96    60%
	 source_acceptance_test/tests/test_full_refresh.py       38      0   100%
	 source_acceptance_test/tests/test_incremental.py        69     38    45%
	 source_acceptance_test/utils/__init__.py                 6      0   100%
	 source_acceptance_test/utils/asserts.py                 37      2    95%
	 source_acceptance_test/utils/common.py                  54     17    69%
	 source_acceptance_test/utils/compare.py                 62     23    63%
	 source_acceptance_test/utils/connector_runner.py       110     48    56%
	 source_acceptance_test/utils/json_schema_helper.py     115     14    88%
	 ------------------------------------------------------------------------
	 TOTAL                                                  979    404    59%
	 ---------- coverage: platform linux, python 3.8.10-final-0 -----------
	 Name                        Stmts   Miss  Cover
	 -----------------------------------------------
	 source_github/__init__.py       2      0   100%
	 source_github/source.py        78     35    55%
	 source_github/streams.py      369    162    56%
	 -----------------------------------------------
	 TOTAL                         449    197    56%

[yevhenii-ldv]

/publish connector=connectors/source-github

🕑 connectors/source-github https://github.com/airbytehq/airbyte/actions/runs/1728816467
✅ connectors/source-github https://github.com/airbytehq/airbyte/actions/runs/1728816467