numexpr is one optional package for langchain, install it for e2e test.

[huaiyan]

Description

Langchain changed numexpr as optional package in langchain-ai/langchain#11049.
So, pip install langchain will not install numexpr.
Add pip install numexpr to fix e2e test because we need call langchain.agents.load_tools.load_tools.

Test failed because can't apply this branch's yaml to install numexpr.
Trigger e2e test separately and test succeeded.
https://github.com/microsoft/promptflow/actions/runs/6440435201

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[github-actions]

Executor E2E Test Result robbenwang/install_numexpr_for_e2e

    2 files      2 suites   7m 50s ⏱️
102 tests   99 ✔️ 2 💤 1 ❌
204 runs  196 ✔️ 6 💤 2 ❌

For more details on these failures, see this check.

Results for commit f8fd5cb.

♻️ This comment has been updated with latest results.

[github-actions]

Executor E2E Test Result

    2 files  ±0      2 suites  ±0   8m 27s ⏱️ -58s
102 tests ±0  100 ✔️ +1  2 💤 ±0  0 ❌  - 1 
204 runs  ±0  198 ✔️ +2  6 💤 ±0  0 ❌  - 2 

Results for commit f8fd5cb. ± Comparison against base commit e067bbe.

♻️ This comment has been updated with latest results.