Add changelog entry for v4.48.2 #1327

Job	Run time
Run tests (3.10)	1m 50s
Run tests (3.11)	1m 52s
Run tests (3.12)	1m 59s
Run tests (3.8)	2m 4s
Run linters (mypy)	1m 42s
Run linters (flake8)	1m 33s
Run linters (pydocstyle)	1m 39s
Run linters (pylint)	1m 35s
Run tests (3.9)	1m 53s
Run tests with coverage	2m 47s
Run tests (3.13)	1m 57s
Run tests with different pydantic versions	3m 16s
	24m 7s

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