Update gcp-libraries-bom.version to 13.4.0

[magiccrafter]

Fixes #2571.

[meltsufin]

Thank you!

[codecov]

Codecov Report

Merging #2572 into master will decrease coverage by 7.18%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #2572      +/-   ##
============================================
- Coverage     81.44%   74.26%   -7.19%     
+ Complexity     2397     2170     -227     
============================================
  Files           267      267              
  Lines          7794     7794              
  Branches        807      807              
============================================
- Hits           6348     5788     -560     
- Misses         1103     1630     +527     
- Partials        343      376      +33     

Flag	Coverage Δ	Complexity Δ
integration	?	?
unittests	74.26% <ø> (ø)	2170.00 <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ	Complexity Δ
...gcp/secretmanager/SecretManagerPropertySource.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-4.00%)
...a/spanner/repository/query/SpannerQueryMethod.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-6.00%)
...retmanager/SecretManagerPropertySourceLocator.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-2.00%)
...figure/config/GcpConfigBootstrapConfiguration.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-2.00%)
...e/spanner/GcpSpannerEmulatorAutoConfiguration.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-2.00%)
...epository/config/SpannerRepositoriesRegistrar.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-3.00%)
...ository/config/DatastoreRepositoriesRegistrar.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-3.00%)
...restore/GcpFirestoreEmulatorAutoConfiguration.java	0.00% <0.00%> (-84.85%)	0.00% <0.00%> (-4.00%)
...ramework/cloud/gcp/vision/DocumentOcrTemplate.java	17.64% <0.00%> (-73.53%)	4.00% <0.00%> (-5.00%)
...work/cloud/gcp/bigquery/core/BigQueryTemplate.java	0.00% <0.00%> (-71.70%)	0.00% <0.00%> (-8.00%)
... and 52 more

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