deps: update dependency com.google.auto.value:auto-value to v1.7.4

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
com.google.auto.value:auto-value	patch	1.7.3 -> 1.7.4

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[codecov]

Codecov Report

Merging #156 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #156      +/-   ##
============================================
- Coverage     61.18%   61.16%   -0.03%     
  Complexity      417      417              
============================================
  Files            92       92              
  Lines          2141     2145       +4     
  Branches        180      181       +1     
============================================
+ Hits           1310     1312       +2     
- Misses          734      736       +2     
  Partials         97       97              

Impacted Files	Coverage Δ	Complexity Δ
.../google/cloud/pubsublite/PartitionLookupUtils.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...oud/pubsublite/internal/wire/PublisherBuilder.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...oud/pubsublite/internal/wire/RoutingPublisher.java	0.00% <0.00%> (ø)	0.00% <0.00%> (ø%)
...cloud/pubsublite/internal/wire/SubscriberImpl.java	82.83% <0.00%> (+1.49%)	26.00% <0.00%> (ø%)

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