Bump google-cloud-storage from 0.15.0 to 0.23.0 #377

Job	Run time
taskchampion with no features	48s
rust 1.78.0 on ubuntu-latest	3m 14s
taskchampion with features server-sync	1m 4s
rust 1.78.0 on macOS-latest	2m 26s
taskchampion with features server-gcp	1m 40s
rust 1.78.0 on windows-latest	6m 11s
taskchampion with features server-aws	2m 5s
rust stable on ubuntu-latest	2m 44s
taskchampion with features tls-native-roots	50s
rust stable on macOS-latest	2m 39s
rust stable on windows-latest	6m 24s
	30m 5s

Provide feedback