deps: update spanner.version to v1.52.0

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
com.google.api.grpc:grpc-google-cloud-spanner-admin-database-v1	minor	1.51.0 -> 1.52.0
com.google.api.grpc:grpc-google-cloud-spanner-admin-instance-v1	minor	1.51.0 -> 1.52.0
com.google.api.grpc:grpc-google-cloud-spanner-v1	minor	1.51.0 -> 1.52.0
com.google.cloud:google-cloud-spanner	minor	1.51.0 -> 1.52.0
com.google.api.grpc:proto-google-cloud-spanner-admin-database-v1	minor	1.51.0 -> 1.52.0
com.google.api.grpc:proto-google-cloud-spanner-v1	minor	1.51.0 -> 1.52.0

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Release Notes

googleapis/java-spanner

v1.52.0

Compare Source

Features

• add backup support (#​100) (ed3874a)
• add Backups protos and APIs (#​97) (5643c22)

Bug Fixes

• add client id to metrics to avoid collisions (#​117) (338e136), closes #​106
• ignore added interface methods for generated code (#​101) (402cfa1), closes #​99
• use grpc 1.27.2 to prevent version conflicts (#​105) (37b7c88)

Dependencies

• update core dependencies (#​94) (f3ca4c9)
• update opencensus.version to v0.26.0 (#​116) (1b8db0b)

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[codecov]

Codecov Report

Merging #95 into master will not change coverage.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #95 +/- ## ========================================= Coverage 77.79% 77.79% Complexity 1723 1723 ========================================= Files 60 60 Lines 5836 5836 Branches 769 769 ========================================= Hits 4540 4540 Misses 923 923 Partials 373 373

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