Update KZ holidays: add 2025 special holidays #5278

Job	Run time
Run pre-commit	28s
CodeQL	1m 29s
Test Python 3.9 on macos-latest	57s
Test Python 3.10 on macos-latest	59s
Test Python 3.11 on macos-latest	44s
Test Python 3.12 on macos-latest	1m 2s
Test Python 3.13 on macos-latest	58s
Test Python 3.9 on ubuntu-latest	1m 1s
Test Python 3.10 on ubuntu-latest	1m 2s
Test Python 3.11 on ubuntu-latest	53s
Test Python 3.12 on ubuntu-latest	1m 29s
Test Python 3.13 on ubuntu-latest	1m 14s
Test Python 3.9 on windows-latest	2m 1s
Test Python 3.10 on windows-latest	1m 49s
Test Python 3.11 on windows-latest	2m 4s
Test Python 3.12 on windows-latest	2m 24s
Test Python 3.13 on windows-latest	2m 46s
Test docs build	40s
Build distribution	31s
Test build on macos-latest	46s
Test build on ubuntu-latest	47s
Test build on windows-latest	2m 46s
Publish generated artifacts	0s
	28m 50s

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