dependabot: check for github actions and bundler #366

Job	Run time
spec (ruby 3.2) / spec	42s
spec (ruby 2.7) / spec	51s
acceptance (ruby 2.7 \| ubuntu-latest) / acceptance	13m 4s
acceptance (ruby 2.7 \| windows-2019) / acceptance	28m 39s
acceptance (ruby 3.2 \| windows-2019) / acceptance	40m 38s
acceptance (ruby 3.2 \| ubuntu-latest) / acceptance	13m 5s
	1h 36m 59s

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