Update vtu11 h to 1 2

[MFraters]

This pull request updates vtu11.h 1.0 to 1.2, which includes some fixes to make it work in a separate commit.

[github-actions]

Benchmark	Main	Feature	Difference (99.9% CI)
Slab interpolation simple none	0.991 ± 0.006 (s=418)	0.991 ± 0.005 (s=492)	-0.1% .. +0.1%
Slab interpolation curved simple none	0.993 ± 0.004 (s=463)	0.994 ± 0.004 (s=446)	-0.0% .. +0.2%
Spherical slab interpolation simple none	1.158 ± 0.006 (s=420)	1.159 ± 0.008 (s=360)	-0.0% .. +0.2%
Slab interpolation simple curved CMS	1.035 ± 0.004 (s=444)	1.035 ± 0.005 (s=428)	-0.1% .. +0.1%
Spherical slab interpolation simple CMS	1.573 ± 0.012 (s=299)	1.568 ± 0.012 (s=277)	-0.5% .. -0.1%
Spherical fault interpolation simple none	1.166 ± 0.005 (s=398)	1.164 ± 0.006 (s=377)	-0.3% .. -0.0%
Cartesian min max surface	2.378 ± 0.019 (s=193)	2.317 ± 0.022 (s=193)	-2.9% .. -2.3%
Spherical min max surface	7.029 ± 0.039 (s=57)	7.027 ± 0.038 (s=74)	-0.4% .. +0.3%

[MFraters]

I will delay this till after the 1.0 release