deps: update dependency com.google.cloud:google-cloud-spanner-bom to v4

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.google.cloud:google-cloud-spanner-bom	3.3.2 -> 4.0.0

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Release Notes

googleapis/java-spanner

v4.0.0

Compare Source

⚠ BREAKING CHANGES

• Point In Time Recovery (PITR) (#​452)
• add support for CommitStats (#​544)

Features

• add option for returning Spanner commit stats (#​817) (80d3585)
• add support for CommitStats (#​544) (44aa384)
• allow session pool settings in connection url (#​821) (e1e9152)
• generate sample code in the Java microgenerator (#​859) (7cdfb82)
• Point In Time Recovery (PITR) (#​452) (ab14a5e)

Bug Fixes

• allows user-agent header with header provider (#​871) (3de7e2a)
• make compiled statements immutable (#​843) (118d1b3)

Dependencies

• update dependency com.google.cloud:google-cloud-monitoring to v2.0.12 (#​854) (58cebd8)
• update dependency com.google.cloud:google-cloud-trace to v1.2.11 (#​825) (49c8c5d)

Documentation

• libraries-bom 16.4.0 (#​867) (5af3673)

3.3.2 (2021-01-18)

Bug Fixes

• closes pool maintainer on invalidation (#​784) (d122ed9)
• UNAVAILABLE error on first query could cause transaction to get stuck (#​807) (c7dc6e6), closes #​799

Dependencies

• update opencensus.version to v0.28.3 (#​806) (77910a0)

3.3.1 (2021-01-14)

⚠ IMPORTANT: Known issue with this version of the client

Since v3.0.0, transactions can get stuck if the Spanner backend returns a retryable error when consuming the first record of a read / query in a transaction.

A fix is submitted and available in version v3.3.2

Please use v3.3.2 instead of this version.

Apologies for the inconvenience.

Bug Fixes

• blanks span for session keepAlive traces (#​797) (1a86e4f)
• mark transaction as invalid if no tx is returned before RS is closed (#​791) (e02e5a7)
• remove time series before adding it (#​766) (90255ea), closes #​202
• safeguard against statements errors when requesting tx (#​800) (c4776e4)

Dependencies

• update dependency com.google.cloud:google-cloud-shared-dependencies to v0.17.1 (#​794) (f0beabb)
• update dependency com.google.cloud:google-cloud-shared-dependencies to v0.18.0 (#​796) (1a71e50)

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[codecov]

Codecov Report

Merging #359 (a8bbe3a) into master (3d4647f) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #359   +/-   ##
=========================================
  Coverage     71.98%   71.98%           
  Complexity     1131     1131           
=========================================
  Files            24       24           
  Lines          3520     3520           
  Branches        537      537           
=========================================
  Hits           2534     2534           
  Misses          767      767           
  Partials        219      219           

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