v3.49.0

LinearSolve v3.49.0

Diff since v3.48.1

Merged pull requests:

• fix default solver selection for CuSparseMatrix (#834) (@hexaeder)
• Fix verbosity log tests to use regex matching (#843) (@ChrisRackauckas-Claude)
• Remove UnPack (#846) (@devmotion)

Closed issues:

• Default algs for CUSPARSE failing (#827)
• dgetrf: Singular matrix when solving a boundary value problem (#830)
• Preconditioners do not work correctly (#839)