chore(deps): Drop opentelemetry-instrumentation-httpx from the otel extra

[vdusek]

Removes opentelemetry-instrumentation-httpx from the otel extra. Crawlee never imports it, and it only mattered when HttpxHttpClient was the default client. It also didn't work anymore: HttpxHttpClient runs on httpx2, and HTTPXClientInstrumentor records no spans for it.

The other OpenTelemetry floors go back to their master values. The bump to the 0.65b0 / 1.44.0 line was only needed because opentelemetry-instrumentation-httpx==0.65b0 pins its siblings with ==.

The tracing guide now says how to trace HttpxHttpClient requests: install opentelemetry-instrumentation-httpx>=0.65b0 yourself and use HTTPX2ClientInstrumentor.

✍️ Drafted by Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.73%. Comparing base (dd5c5e6) to head (3346b12).
⚠️ Report is 23 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2213      +/-   ##
==========================================
- Coverage   93.74%   93.73%   -0.01%     
==========================================
  Files         181      181              
  Lines       12865    12884      +19     
==========================================
+ Hits        12060    12077      +17     
- Misses        805      807       +2     

Flag	Coverage Δ
unit	93.73% <ø> (-0.01%)	⬇️

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[Mantisus]

If I'm not mistaken, opentelemetry-instrumentation-httpx was added as a dependency when HttpxHttpClient was the default client. Maybe we can remove that?

[vdusek]

If I'm not mistaken, opentelemetry-instrumentation-httpx was added as a dependency when HttpxHttpClient was the default client. Maybe we can remove that?

cc @Pijukatel

[Pijukatel]

If I'm not mistaken, opentelemetry-instrumentation-httpx was added as a dependency when HttpxHttpClient was the default client. Maybe we can remove that?

cc @Pijukatel

I guess we can. It would be useful only if someone uses httpx and otel extras, and if desired, one can add it on their own.