build(deps): bump pydata-sphinx-theme from 0.15.3 to 0.15.4 in /_package #1553

Job	Run time
Code style	39s
Documentation Style Check	19s
Documentation building	2m 15s
Build and Smoke tests (Linux) (3.8)	23s
Build and Smoke tests (macOS and Windows)	0s
Build and Smoke tests (Linux) (3.9)	25s
Build and Smoke tests (Linux) (3.10)	30s
Build and Smoke tests (Linux) (3.11)	23s
Build and unit testing	3m 47s
Package library	16s
Deploy development documentation	0s
Release project to public PyPI and GitHub	0s
Deploy stable documentation	0s
	8m 57s

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