Update pixi lockfile

[mantid-builder]

Explicit dependencies

Dependency	Before	After	Change	Environments
requests	2.32.5	2.33.0	Minor Upgrade	default on all platforms
qtconsole	5.7.1	5.7.2	Patch Upgrade	default on all platforms
rattler-index	0.27.19	0.27.20	Patch Upgrade	{default, package-standalone, rattler-builder} on all platforms docs-build on linux-64

Implicit dependencies

Dependency	Before	After	Change	Environments
requests	2.32.5	2.33.0	Minor Upgrade	{docs-migration, package-standalone} on all platforms {devsite, docs-build, publish-anaconda} on linux-64
libcxx	22.1.1	22.1.2	Patch Upgrade	{docs-migration, package-standalone} on osx-arm64
qtconsole-base	5.7.1	5.7.2	Patch Upgrade	default on all platforms
tomli	2.4.0	2.4.1	Patch Upgrade	{default, docs-migration, rattler-builder} on all platforms publish-anaconda on linux-64
libfabric	ha770c72_0	ha770c72_1	Only build string	default on linux-64
libfabric1	h8f87c3e_0	h8f87c3e_1	Only build string	default on linux-64

[github-actions]

Unit test results

2 863 tests   2 863 ✅  13h 30m 39s ⏱️
    1 suites      0 💤
    1 files        0 ❌

Results for commit 91465cb.

[github-actions]

System test results

808 tests   792 ✅  2h 49m 35s ⏱️
 11 suites   16 💤
 11 files      0 ❌

Results for commit 91465cb.

[jclarkeSTFC]

Hopefully the macOS problem is fixed by #41136

Will close this and re-run the GHA