Update kokoro path to cobalt/devinfra/kokoro #16674

Job	Run time
android-arm64 / initialize	1m 12s
chromium_android-arm / initialize	1m 18s
android-arm / initialize	1m 18s
chromium_android-arm64 / initialize	1m 16s
android-x86 / initialize	1m 24s
chromium_android-x86 / initialize	1m 24s
chromium_android-arm64 / docker-build-image	3m 46s
chromium_android-arm / docker-build-image	3m 37s
android-arm / docker-build-image	4m 7s
android-arm64 / docker-build-image	3m 58s
android-x86 / docker-build-image	3m 46s
chromium_android-x86 / docker-build-image	4m 2s
chromium_android-arm / arm_devel	32m 42s
chromium_android-arm / arm_debug	31m 21s
chromium_android-arm / arm_qa	32m 32s
chromium_android-arm / arm_gold	38m 18s
chromium_android-arm64 / arm64_devel	50m 28s
chromium_android-arm64 / arm64_debug	49m 41s
chromium_android-arm64 / arm64_qa	49m 12s
chromium_android-arm64 / arm64_gold	49m 24s
android-arm64 / ${{ matrix.name }}_${{ matrix.config }}	0s
android-arm / arm_devel	32m 20s
android-arm / arm_debug	21s
android-arm / arm_qa	36m 20s
android-arm / arm_gold	43m 11s
android-x86 / x86_devel	34m 14s
android-x86 / x86_debug	21s
android-x86 / x86_qa	33m 37s
android-x86 / x86_gold	34m 24s
chromium_android-x86 / x86_devel	32m 6s
chromium_android-x86 / x86_debug	32m 22s
chromium_android-x86 / x86_qa	32m 51s
chromium_android-x86 / x86_gold	33m 51s
	11h 50m 44s

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