chore(deps): update dependency com.google.cloud.samples:shared-configuration to v1.2.0

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.google.cloud.samples:shared-configuration	1.0.23 -> 1.2.0

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Release Notes

GoogleCloudPlatform/java-repo-tools

v1.2.0

Compare Source

v1.0.24

Compare Source

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