chore: group guava with other core dependencies

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Commits in this repo since last synth:
1ed15e8 reorder dependencies for better transitive version selection (#140)
9ece0da chore: release 1.92.4-SNAPSHOT (#138)
f362085 chore: release 1.92.3 (#134)
9216702 deps: update dependency com.google.http-client:google-http-client-bom to v1.34.1 (#137)
f40c636 deps: update dependency com.google.auth:google-auth-library-bom to v0.20.0 (#135)
21d715c chore(deps): update dependency com.google.truth:truth to v1.0.1 (#132)

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synthtool > Executing /tmpfs/src/git/autosynth/working_repo/synth.py.
.github/ISSUE_TEMPLATE/bug_report.md
.github/ISSUE_TEMPLATE/feature_request.md
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CODE_OF_CONDUCT.md
CONTRIBUTING.md
LICENSE
README.md
codecov.yaml
java.header
license-checks.xml
renovate.json
synthtool > Wrote metadata to synth.metadata.

[codecov]

Codecov Report

Merging #142 into master will increase coverage by 0.21%.
The diff coverage is n/a.

@@ Coverage Diff @@## master #142 +/- ##
============================================
+ Coverage 66.43% 66.64% +0.21% - Complexity 365 370 +5 
============================================
Files 34 34 Lines 1877 1877 Branches 240 240 ============================================
+ Hits 1247 1251 +4 + Misses 528 524 -4 
Partials 102 102

Impacted Files	Coverage Δ	Complexity Δ
...src/main/java/com/google/cloud/ServiceOptions.java	44.26% <0%> (+0.39%)	33% <0%> (+1%)	⬆️
...a/com/google/cloud/testing/BaseEmulatorHelper.java	31.42% <0%> (+0.57%)	5% <0%> (ø)	⬇️
.../com/google/cloud/MonitoredResourceDescriptor.java	84.03% <0%> (+1.68%)	24% <0%> (+4%)	⬆️

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