Update Cloud GA and Beta versions.

[songy23]

Update to the latest versions, though Exemplar is still not there.

FYI the updated distribution.proto in Googleapis:
https://github.com/googleapis/googleapis/blob/master/google/api/distribution.proto#L212.

[codecov-io]

Codecov Report

Merging #1524 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##             master   #1524   +/-   ##
========================================
  Coverage      82.5%   82.5%           
  Complexity     1668    1668           
========================================
  Files           251     251           
  Lines          7770    7770           
  Branches        759     759           
========================================
  Hits           6411    6411           
  Misses         1128    1128           
  Partials        231     231

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