Bump pip from 25.3 to 26.0 in /pysplashsurf/pysplashsurf/docs #621

Job	Run time
Build splashsurf_lib with all features	3m 18s
Run cargo fmt	8s
Check and build entire workspace	3m 19s
Build splashsurf_lib with no default features	1m 4s
Build & test release mode (ubuntu-latest)	3m 55s
Build & test release mode (ubuntu-24.04-arm)	3m 33s
Build & test release mode (macos-14)	6m 41s
Build & test release mode (windows-latest)	7m 58s
Publish to crates.io	0s
	29m 56s

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