Bump execnet from 1.9.0 to 2.1.1

[dependabot]

Bumps execnet from 1.9.0 to 2.1.1.

Changelog

Sourced from execnet's changelog.

2.1.1 (2024-04-08)

• [#267](https://github.com/pytest-dev/execnet/issues/267) <https://github.com/pytest-dev/execnet/issue/267>__ Fixed regression in 2.1.0 where the strconfig argument to load/loads is ignored.

2.1.0 (2024-04-05)

• [#243](https://github.com/pytest-dev/execnet/issues/243) <https://github.com/pytest-dev/execnet/pull/243>__: Added main_thread_only execmodel which is derived from the thread execmodel and only executes remote_exec calls in the main thread.

  Callers of remote_exec must use the returned channel to wait for a task to complete before they call remote_exec again, otherwise the remote_exec call will fail with a concurrent remote_exec would cause deadlock error. The main_thread_only execmodel provides solutions for [#96](https://github.com/pytest-dev/execnet/issues/96) <https://github.com/pytest-dev/execnet/issues/96>__ and pytest-dev/pytest-xdist#620 <https://github.com/pytest-dev/pytest-xdist/issues/620>__ (pending a new pytest-xdist release).

  Also fixed init_popen_io to use closefd=False for shared stdin and stdout file descriptors, preventing Bad file descriptor errors triggered by test_stdouterrin_setnull.

• The library is now typed and the typing is exposed to type-checkers.

• Re-exported Gateway, Channel, DumpError and LoadError from execnet. The constructors are private.

• Fixed GatewayBase.join() timeout argument getting ignored.

• Removed support for Python 3.7.

• Added official support for Python 3.12.

2.0.2 (2023-07-09)

• Re-release without code changes, just to include tox.ini into the source distribution.

2.0.1 (2023-07-08)

• Re-release without code changes, just to include docs and tests into the source distribution.

2.0.0 (2023-07-06)

• Removed support for Python < 3.7.

  • Applied pyupgrade --py37-plus.
  • Minimal mypy fixes and dropped Python 2 support code.

• Migrated packaging to hatch.

• Dropped deprecated APIs of old makegateway names.

... (truncated)

Commits

• e1332b1 Update CHANGELOG for 2.1.1
• 8481612 Merge pull request #268 from bluetech/fix-strconfig-ignored
• d08b7e7 gateway_base: fix load(strconfig) getting ignored
• d0fc2c2 Merge pull request #265 from pytest-dev/release-2.1.0
• 64ecf67 Update CHANGELOG for 2.1.0
• eb7f7bc Merge pull request #266 from bluetech/up-download-artifact
• 89c99c9 ci: update download-artifact action to fix deploy job
• 42aeb82 Merge pull request #263 from bluetech/typing-fixes
• 5035913 Export DumpError, LoadError
• e218d45 gateway_base: replace -> object return types to -> Any
• Additional commits viewable in compare view

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