Update dependency typescript to ~5.9.0 - autoclosed #1355

Job	Run time
Generating protobuf	23s
Build RTC wheels (aarch64)	1m 12s
Build RTC wheels (AMD64)	1m 18s
Build RTC wheels (x86_64)	57s
Build RTC wheels (x86_64 arm64)	54s
Make RTC sdist	15s
Test (ubuntu-latest, Python 3.10) / Test (ubuntu-latest, Python 3.10)	37s
Test (ubuntu-latest, Python 3.12) / Test (ubuntu-latest, Python 3.12)	27s
Test (macos-latest, Python 3.14) / Test (macos-latest, Python 3.14)	44s
Test (ubuntu-latest, Python 3.13) / Test (ubuntu-latest, Python 3.13)	39s
Test (macos-latest, Python 3.12) / Test (macos-latest, Python 3.12)	41s
Test (ubuntu-latest, Python 3.9) / Test (ubuntu-latest, Python 3.9)	35s
Test (windows-latest, Python 3.14) / Test (windows-latest, Python 3.14)	1m 9s
Test (ubuntu-latest, Python 3.14) / Test (ubuntu-latest, Python 3.14)	32s
Test (macos-latest, Python 3.9) / Test (macos-latest, Python 3.9)	1m 8s
Test (windows-latest, Python 3.12) / Test (windows-latest, Python 3.12)	1m 11s
Test (ubuntu-latest, Python 3.11) / Test (ubuntu-latest, Python 3.11)	36s
Test (windows-latest, Python 3.9) / Test (windows-latest, Python 3.9)	1m 31s
Publish RTC release	0s
docs	0s
	14m 49s

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