Change permission of cert/key files to please pg #8552

Job	Run time
build (arm64-android, android_arm64_v8a, OFF, android-arm64)	11m 45s
build (arm64-android, android_arm64_v8a, OFF, android-arm64)	10m 4s
build (arm64-android, android_arm64_v8a, ON, android-arm64)	9m 48s
build (arm64-android, android_arm64_v8a, ON, android-arm64)	9m 48s
build (arm-neon-android, android_armv7, OFF, android-arm-neon)	9m 15s
build (arm-neon-android, android_armv7, OFF, android-arm-neon)	9m 15s
build (arm-neon-android, android_armv7, ON, android-arm-neon)	9m 35s
build (arm-neon-android, android_armv7, ON, android-arm-neon)	9m 35s
build (x64-android, android_x86_64, OFF, android-x64)	9m 41s
build (x64-android, android_x86_64, OFF, android-x64)	9m 41s
build (x64-android, android_x86_64, ON, android-x64)	8m 57s
build (x64-android, android_x86_64, ON, android-x64)	8m 57s
build (x86-android, android_x86, OFF, android-x86)	4m 24s
build (x86-android, android_x86, OFF, android-x86)	9m 44s
build (x86-android, android_x86, ON, android-x86)	4m 48s
build (x86-android, android_x86, ON, android-x86)	9m 21s
deploy to play store	0s
deploy to play store	0s
comment (commit)	0s
comment (commit)	0s
comment (pr)	0s
comment (pr)	5s
	2h 24m 43s

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