Fix publish action

[TonyCTHsu]

What does this PR do?

https://github.com/DataDog/dd-trace-rb/actions/runs/13496397564

Fix error from releasing 2.11.0

1. Fix github-release job with the repo information
2. Fix update-gem-version job with ruby installed
3. Fix update-release-branch job with the correct url and branch

Change log entry
None

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-02-26 11:06:21

Comparing candidate commit d7f2928 in PR branch tonycthsu/fix-publish with baseline commit b2274aa in branch master.

Found 0 performance improvements and 1 performance regressions! Performance is the same for 30 metrics, 2 unstable metrics.

scenario:line instrumentation - targeted

• 🟥 throughput [-9447.891op/s; -8939.263op/s] or [-5.663%; -5.358%]

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.69%. Comparing base (b2274aa) to head (d7f2928).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4430      +/-   ##
==========================================
- Coverage   97.71%   97.69%   -0.02%     
==========================================
  Files        1374     1374              
  Lines       83716    83715       -1     
  Branches     4236     4236              
==========================================
- Hits        81805    81789      -16     
- Misses       1911     1926      +15     

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[datadog-datadog-prod-us1]

Datadog Report

Branch report: tonycthsu/fix-publish
Commit report: d7f2928
Test service: dd-trace-rb

✅ 0 Failed, 20609 Passed, 1371 Skipped, 3m 15.6s Total Time