Bump to version 2.8.0

[ivoanjo]

Added

• AppSec: Add SQL injection detection for ActiveRecord for following adapters: mysql2, postgresql, and sqlite3 (Add ActiveRecord instrumentation to detect SQLi in AppSec #4167)
• Telemetry: Add environment variable to disable logs (Telemetry: Add environment variable to disable logs #4153)
• Integrations: Add configuration option on_error to Elasticsearch tracing (Add config support for "on_error" in Elasticsearch tracing #4066)

Changed

• Upgrade libdatadog dependency to 14.3.1 ([PROF-11007] Upgrade libdatadog dependency to 14.3.1 #4196)
• Profiling: Require Ruby 3.1+ for heap profiling ([PROF-10978] Require Ruby 3.1+ for heap profiling #4178)
• Appsec: Update libddwaf to 1.18.0.0.0 (Update libddwaf to 1.18.0.0.0 #4164)
• Single-step: Lower SSI GLIBC requirements down to 2.17 (Lower glibc requirements for SSI #4137)

Fixed

• Integrations: Avoid loading ActiveSupport::Cache::RedisCacheStore, which tries to load redis >= 4.0.1 regardless of the version of Redis the host application has installed (Do not load redis gem when incompatible #4197)
• Profiling: Fix unsafe initialization when using profiler with otel tracing ([PROF-11003] Fix unsafe initialization when using profiler with otel tracing #4195)
• Single-step: Add safe NOOP injection script for very old rubies (Guard injection against old rubies #4140)

[github-actions]

👋 Hey @ivoanjo, please fill "Change log entry" section in the pull request description.

If changes need to be present in CHANGELOG.md you can state it this way

**Change log entry**

Yes. A brief summary to be placed into the CHANGELOG.md

(possible answers Yes/Yep/Yeah)

Or you can opt out like that

**Change log entry**

None.

(possible answers No/Nope/None)

^{Visited at: 2024-12-10 16:15:57 UTC}

[p-datadog]

We put DI into Highlights section which wasn't added to the diff in this PR and now DI isn't mentioned in the changelog for the release at all.

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-12-10 16:52:46

Comparing candidate commit 51d61a3 in PR branch bump_to_version_2.8.0 with baseline commit 18171cc in branch master.

Found 0 performance improvements and 3 performance regressions! Performance is the same for 28 metrics, 2 unstable metrics.

scenario:profiler - sample timeline=false

• 🟥 throughput [-0.473op/s; -0.427op/s] or [-7.301%; -6.586%]

scenario:tracing - Propagation - Datadog

• 🟥 throughput [-3027.913op/s; -2955.794op/s] or [-9.177%; -8.958%]

scenario:tracing - Tracing.log_correlation

• 🟥 throughput [-8073.458op/s; -7687.522op/s] or [-6.754%; -6.431%]

[ivoanjo]

We spotted the broken system-tests, we're going to take a look at them separately :)

[p-datadog]

PR to skip failing test in all dd-trace-rb versions: DataDog/system-tests#3655

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.76%. Comparing base (18171cc) to head (51d61a3).
Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4215   +/-   ##
=======================================
  Coverage   97.76%   97.76%           
=======================================
  Files        1357     1357           
  Lines       82130    82130           
  Branches     4174     4174           
=======================================
+ Hits        80296    80297    +1     
+ Misses       1834     1833    -1     

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