refactor: use caching attribute client

[aaron-steinfeld]

Description

Remove the custom attribute cache in graphql to use the common caching attribute client instead (which was built much later using the graphql cache as a model). Specifically, this changes over to use the newer unary attribute API instead of the deprecated streaming API.

Updated grpc versions to align, too.

Testing

Updated UTs and manually tested

Checklist:

• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Merging #76 (6e3fbf2) into main (2edb271) will increase coverage by 0.03%.
The diff coverage is 65.21%.

@@             Coverage Diff              @@
##               main      #76      +/-   ##
============================================
+ Coverage     59.34%   59.38%   +0.03%     
+ Complexity      244      236       -8     
============================================
  Files            81       80       -1     
  Lines          1225     1199      -26     
  Branches         34       34              
============================================
- Hits            727      712      -15     
+ Misses          470      460      -10     
+ Partials         28       27       -1     

Flag	Coverage Δ
unit	59.38% <65.21%> (+0.03%)	⬆️

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Impacted Files	Coverage Δ
.../core/graphql/attributes/AttributeStoreModule.java	0.00% <ø> (ø)
...core/graphql/attributes/CachingAttributeStore.java	78.04% <65.21%> (-17.87%)	⬇️

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[github-actions]

Unit Test Results

30 files  ±0  30 suites  ±0   32s ⏱️ -12s
91 tests  - 6  91 ✔️  - 6  0 💤 ±0  0 ❌ ±0 

Results for commit d941520. ± Comparison against base commit 2edb271.