ci: Add dependabot #348

Job	Run time
generate_source	25s
android (armeabi-v7a)	1m 1s
build_and_test (Debug, ubuntu-20.04)	1m 7s
chromium	2m 5s
android (arm64-v8a)	1m 19s
build_and_test (Debug, ubuntu-22.04)	1m 16s
reuse	9s
build_and_test (Debug, windows-latest)	2m 13s
build_and_test (Debug, macos-latest)	1m 1s
build_and_test (Release, ubuntu-20.04)	1m 14s
build_and_test (Release, ubuntu-22.04)	1m 19s
build_and_test (Release, windows-latest)	3m 36s
build_and_test (Release, macos-latest)	1m 52s
	18m 37s

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