chore(main): release protocol/go 0.28.0

[opentdf-automation]

🤖 I have created a release beep boop

0.28.0 (2026-04-28)

Features

• sdk: add shorthand enum constants for policy types (#3408) (c6f18cb)

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This PR was generated with Release Please. See documentation.

[github-actions]

Benchmark results, click to expand

Benchmark authorization.GetDecisions Results:

Metric	Value
Approved Decision Requests	1000
Denied Decision Requests	0
Total Time	185.50736ms

Benchmark authorization.v2.GetMultiResourceDecision Results:

Metric	Value
Approved Decision Requests	1000
Denied Decision Requests	0
Total Time	97.972941ms

Benchmark Statistics

Name	№ Requests	Avg Duration	Min Duration	Max Duration

Bulk Benchmark Results

Metric	Value
Total Decrypts	100
Successful Decrypts	100
Failed Decrypts	0
Total Time	430.205396ms
Throughput	232.45 requests/second

TDF3 Benchmark Results:

Metric	Value
Total Requests	5000
Successful Requests	5000
Failed Requests	0
Concurrent Requests	50
Total Time	45.015482528s
Average Latency	448.567048ms
Throughput	111.07 requests/second

[github-actions]

⚠️ Govulncheck found vulnerabilities ⚠️

The following modules have known vulnerabilities:

• tests-bdd

See the workflow run for details.

[github-actions]

X-Test Results

✅ java-v0.9.0
✅ go-pull-3409
✅ java-pull-3409
✅ go-v0.9.0
bats-test-results
✅ js-pull-3409
✅ js-v0.9.0
cukes-report
opentdfplatformJAU5I8.dockerbuild
govulncheck-failure-8

[opentdf-automation]

🤖 Created releases:

• protocol/go/v0.28.0

🌻