deps: update dependency com.google.cloud:google-cloud-spanner-bom to v6.79.0

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.google.cloud:google-cloud-spanner-bom	6.78.0 -> 6.79.0

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Release Notes

googleapis/java-spanner (com.google.cloud:google-cloud-spanner-bom)

v6.79.0

Compare Source

Features

• Support DML auto-batching in Connection API (#​3386) (a1ce267)

Dependencies

• Update dependency com.google.api.grpc:proto-google-cloud-monitoring-v3 to v3.53.0 (#​3390) (a060e92)
• Update dependency com.google.cloud:google-cloud-monitoring to v3.53.0 (#​3391) (7f0927d)
• Update dependency com.google.cloud:google-cloud-monitoring to v3.53.0 (#​3392) (fd3e92d)
• Update dependency com.google.cloud:sdk-platform-java-config to v3.37.0 (#​3395) (8ecb1a9)
• Update dependency com.google.cloud.opentelemetry:exporter-metrics to v0.33.0 (#​3388) (26aa51d)
• Update dependency com.google.cloud.opentelemetry:exporter-trace to v0.33.0 (#​3389) (6e34c5a)
• Update googleapis/sdk-platform-java action to v2.47.0 (#​3383) (4f0d693)

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[dpebot]

/gcbrun

[dpebot]

/gcbrun