refactor!: Remove deprecated `as_bytes` and `as_file` parameters from `KeyValueStoreClient.get_record` #350

Job	Run time
Type check / Type check (3.12)	18s
Type check / Type check (3.9)	16s
Type check / Type check (3.11)	15s
Type check / Type check (3.13)	20s
Type check / Type check (3.10)	16s
Lint check / Lint check (3.9)	11s
Lint check / Lint check (3.13)	13s
Lint check / Lint check (3.10)	12s
Async dostrings check / Async docstrings check	15s
Lint check / Lint check (3.12)	13s
Lint check / Lint check (3.11)	13s
Docs check / Docs check	1m 7s
Unit tests / Unit tests (windows-latest, 3.9)	59s
Unit tests / Unit tests (ubuntu-latest, 3.12)	40s
Unit tests / Unit tests (windows-latest, 3.12)	1m 3s
Unit tests / Unit tests (ubuntu-latest, 3.9)	36s
Unit tests / Unit tests (windows-latest, 3.10)	54s
Unit tests / Unit tests (windows-latest, 3.11)	1m 1s
Unit tests / Unit tests (ubuntu-latest, 3.10)	37s
Unit tests / Unit tests (ubuntu-latest, 3.11)	42s
Unit tests / Unit tests (ubuntu-latest, 3.13)	42s
Unit tests / Unit tests (windows-latest, 3.13)	1m 10s
Integration tests / Approve integration tests for PRs from forks	3s
Integration tests / Integration tests	0s
Integration tests / Integration tests for PRs from forks	-1s
	12m 15s

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