Fix opentelemetry dependency conflicts by regenerating requirements.txt with pip-compile

[Copilot]

This PR fixes the CI failure in Dependabot PR #2600 that attempted to upgrade opentelemetry-instrumentation-psycopg2 from 0.52b1 to 0.56b0.

Problem

The original Dependabot upgrade failed because it only upgraded some opentelemetry packages while leaving others at incompatible versions, creating a dependency conflict:

× No solution found when resolving dependencies:
  ╰─▶ Because opentelemetry-instrumentation==0.56b0 depends on
      opentelemetry-semantic-conventions==0.56b0 and you require
      opentelemetry-instrumentation==0.56b0, we can conclude that you require
      opentelemetry-semantic-conventions==0.56b0.
      And because you require opentelemetry-semantic-conventions==0.52b1, we
      can conclude that your requirements are unsatisfiable.

Solution

Used pip-compile to properly regenerate requirements.txt with resolved dependencies:

pip-compile requirements.in --upgrade -o requirements.txt

This updated all opentelemetry packages to consistent 0.57b0 versions (newer than Dependabot's target), including:

• opentelemetry-instrumentation-psycopg2==0.57b0 (the original target)
• opentelemetry-semantic-conventions==0.57b0 (resolves the conflict)
• All other opentelemetry packages updated to 0.57b0 for consistency

The solution also upgraded azure-monitor-opentelemetry to version 1.6.13, which supports the newer opentelemetry package versions.

Fixes #2639.

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[pamelafox]

@copilot Install failed-

Run uv pip install -r requirements-dev.txt
× No solution found when resolving dependencies:
╰─▶ Because opentelemetry-instrumentation==0.56b0 depends on
opentelemetry-semantic-conventions==0.56b0 and you require
opentelemetry-instrumentation==0.56b0, we can conclude that you require
opentelemetry-semantic-conventions==0.56b0.
And because you require opentelemetry-semantic-conventions==0.52b1, we
can conclude that your requirements are unsatisfiable.

[Copilot]

@copilot Install failed-

Run uv pip install -r requirements-dev.txt
...

Fixed the dependency conflict by using pip-compile to regenerate requirements.txt properly. The issue was that manually upgrading individual opentelemetry packages created inconsistent versions. Now all opentelemetry packages are at consistent 0.57b0 versions, and both requirements.txt and requirements-dev.txt install successfully. The fix is in commit e280d12.