deps: update dependency com.google.cloud:google-cloud-spanner-bom to v6.33.0

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.google.cloud:google-cloud-spanner-bom	6.32.0 -> 6.33.0

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Release Notes

googleapis/java-spanner

v6.33.0

Compare Source

Features

• Adding samples for Jsonb data type (#​2147) (1112203)
• Analyze update returns param types (#​2156) (7c5e3da)
• Support DML with Returning clause in Connection API (#​1978) (aac20be)
• Support PostgreSQL END statement (#​2131) (4c29c17)
• Update transaction.proto to include different lock modes (#​2112) (d0195b4)

Dependencies

• Update dependency com.google.cloud:google-cloud-monitoring to v3.7.0 (#​2164) (82385b8)
• Update dependency com.google.cloud:google-cloud-shared-dependencies to v3.0.6 (#​2150) (dba545f)
• Update dependency com.google.cloud:google-cloud-trace to v2.6.0 (#​2165) (99f2779)
• Update dependency org.graalvm.buildtools:junit-platform-native to v0.9.17 (#​2144) (dd24b89)
• Update dependency org.openjdk.jmh:jmh-core to v1.36 (#​2160) (29f9096)
• Update dependency org.openjdk.jmh:jmh-generator-annprocess to v1.36 (#​2161) (9148aa3)

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