Update pixi lockfile (#177)

Summary:
# Explicit dependencies

|Dependency[^1]|Before|After|Change|Environments|
|-|-|-|-|-|
|**dispenso**|1.3.0|1.4.0|Minor Upgrade|{cpu, default} on {osx-64, osx-arm64, win-64}<br/>*all envs* on linux-64|
|**drjit-cpp**|hf9b8971_4|h286801f_4|Only build string|{cpu, default} on osx-arm64|
|**drjit-cpp**|hac325c4_4|h240833e_4|Only build string|{cpu, default} on osx-64|
|**re2**|hd3b24a8_1|haf4117d_2|Only build string|{cpu, default} on win-64|
|**re2**|h2fb0a26_1|ha5e900a_2|Only build string|{cpu, default} on osx-64|
|**re2**|h77b4e00_1|h9925aae_2|Only build string|*all envs* on linux-64|
|**re2**|hcd0e937_1|h6589ca4_2|Only build string|{cpu, default} on osx-arm64|

# Implicit dependencies

|Dependency[^1]|Before|After|Change|Environments|
|-|-|-|-|-|
|cudnn|h3e9b439_1|h62a6f1c_2|Only build string|{gpu, py310-cuda126, py311-cuda126, py312-cuda126} on linux-64|
|libabseil|cxx17_h5888daf_1|cxx17_hbbce691_2|Only build string|*all envs* on linux-64|
|libabseil|cxx17_he0c23c2_1|cxx17_h4eb7d71_2|Only build string|{cpu, default} on win-64|
|libabseil|cxx17_hac325c4_1|cxx17_h0e468a2_2|Only build string|{cpu, default} on osx-64|
|libabseil|cxx17_hf9b8971_1|cxx17_h07bc746_2|Only build string|{cpu, default} on osx-arm64|
|libre2-11|hbbce691_1|hbbce691_2|Only build string|*all envs* on linux-64|
|libre2-11|h4eb7d71_1|h4eb7d71_2|Only build string|{cpu, default} on win-64|
|libre2-11|hd530cb8_1|h0e468a2_2|Only build string|{cpu, default} on osx-64|
|libre2-11|h2348fd5_1|h07bc746_2|Only build string|{cpu, default} on osx-arm64|

[^1]: **Bold** means explicit dependency.
[^2]: Dependency got downgraded.

Pull Request resolved: #177

Reviewed By: juliencbmeta

Differential Revision: D67794216

Pulled By: jeongseok-meta

fbshipit-source-id: 731318ee0a3f47e510571034c9d4f1ad0ce16c2d