chore(ci): Fix nightlies

[dmihalcik-virtru]

Proposed Changes

• checks currently can write to PRs, which nightlies can't
  • See the failures here: https://github.com/opentdf/platform/actions/workflows/nightly-checks.yaml
• I'm gonna try to be nice and reduce the required permissions in checks. let's see if this works...
• Adds workflow_dispatch for manual testing (probably should do this for all scheduled ci test jobs tbh)

This should fix the error:

Invalid workflow file: .github/workflows/nightly-checks.yaml#L79The workflow is not valid. .github/workflows/nightly-checks.yaml (Line: 79, Col: 3): Error calling workflow 'opentdf/platform/.github/workflows/checks.yaml@main'. The nested job 'go' is requesting 'checks: write, pull-requests: read', but is only allowed 'checks: none, pull-requests: none'. .github/workflows/nightly-checks.yaml (Line: 79, Col: 3): Error calling workflow 'opentdf/platform/.github/workflows/checks.yaml@main'. The nested job 'benchmark' is requesting 'pull-requests: write', but is only allowed 'pull-requests: none'.

Checklist

• I have added or updated unit tests
• I have added or updated integration tests (if appropriate)
• I have added or updated documentation

Testing Instructions

[gemini-code-assist]

Note

Gemini is unable to generate a summary for this pull request due to the file types involved not being currently supported.

[github-actions]

Benchmark results, click to expand

Benchmark authorization.GetDecisions Results:

Metric	Value
Approved Decision Requests	5000
Denied Decision Requests	0
Total Time	479.488753ms

Benchmark authorization.v2.GetMultiResourceDecision Results:

Metric	Value
Approved Decision Requests	5000
Denied Decision Requests	0
Total Time	291.814494ms

Standard Benchmark Metrics Skipped or Failed

Bulk Benchmark Results

Metric	Value
Total Decrypts	100
Successful Decrypts	100
Failed Decrypts	0
Total Time	359.99369ms
Throughput	277.78 requests/second

TDF3 Benchmark Results:

Metric	Value
Total Requests	5000
Successful Requests	5000
Failed Requests	0
Concurrent Requests	50
Total Time	51.976657929s
Average Latency	516.200804ms
Throughput	96.20 requests/second

NANOTDF Benchmark Results:

Metric	Value
Total Requests	5000
Successful Requests	4936
Failed Requests	64
Concurrent Requests	50
Total Time	42.632284733s
Average Latency	421.658509ms
Throughput	115.78 requests/second

Error Summary:

Error Message	Occurrences
ReadNanoTDF error: getNanoRewrapKey: rewrapError: internal: internal error rpc error: code = Internal desc = could not perform access	64 occurrences