Create Big Cannons 5.11.1, coming with fixes for the initial v5.11 release.

Fixed:

• [1.20.1] Fixed nethersteel and steel screw breech max stress not having been increased in v5.11.0 (8->10 and 6->8)
• [1.21.1] Fixed splinter particles crashing game
• [1.21.1] Fixed crash with Accessories
• [1.21.1] Fixed Curios not supporting gas mask on head slot