ci: comment details on dependabot submodule bump PRs #2421

Job	Run time
validation / Dependency info	5s
validation / GitHub context	3s
validation / Build coatjava	2m 19s
validation / Configuration files	13s
validation / Event generation (e_n)	1m 5s
validation / Event generation (e_p)	1m 51s
validation / Event generation (e_g)	1m 22s
validation / Event generation (e_gFT)	1m 30s
validation / Event generation (e_pC)	1m 9s
validation / Event generation (eFT_K)	1m 21s
validation / Run (e_n, rgb_fall2019)	3m 5s
validation / Run (e_pC, rgb_fall2019)	3m 13s
validation / Run (e_g, rgb_fall2019)	2m 26s
validation / Run (e_p, rgb_fall2019)	1m 47s
validation / Run (e_gFT, rgb_fall2019)	1m 9s
validation / Run (eFT_K, rgb_fall2019)	1m 7s
validation / Report efficiency	1s
validation / Report multiplicity	1s
	23m 47s

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