Upgrade libbrotli to v1.2.0 #137

Job	Run time
package-sdist	14s
lint	45s
package-wheel (ubuntu-latest)	15m 9s
package-wheel (macos-latest)	5m 52s
package-wheel (windows-latest)	2m 55s
test (ubuntu-latest, 3.9)	6m 1s
test (ubuntu-latest, 3.8)	4m 39s
test (macos-latest, 3.8)	13m 28s
test (ubuntu-latest, 3.12)	3m 23s
test (ubuntu-latest, 3.10)	6m 2s
test (ubuntu-latest, 3.14)	5m 17s
test (macos-latest, 3.9)	11m 35s
test (macos-latest, 3.14)	7m 59s
test (windows-latest, 3.8)	19m 56s
test (macos-latest, 3.13)	11m 22s
test (macos-latest, 3.10)	14m 25s
test (macos-latest, 3.12)	11m 24s
test (ubuntu-latest, 3.13)	6m 0s
test (ubuntu-latest, 3.11)	5m 58s
test (windows-latest, 3.11)	19m 14s
test (macos-latest, 3.11)	11m 47s
test (windows-latest, 3.9)	17m 7s
test (windows-latest, 3.13)	17m 53s
test (windows-latest, 3.14)	17m 45s
test (windows-latest, 3.10)	16m 9s
test (windows-latest, 3.12)	16m 14s
publish	24s
	4h 28m 57s

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