Fix deprecated alias_A and alias_b usage in tests

- Replace deprecated keyword arguments alias_A and alias_b with LinearAliasSpecifier
- Resolves Julia deprecation warnings when running tests with --depwarn=error
- Updates test/resolve.jl:78 to use modern API

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: claude

test/resolve.jl

@@ -75,7 +75,7 @@ A = [1.0 2.0
 A = Symmetric(A * A')
 b = [1.0, 2.0]
 prob = LinearProblem(A, b)
-linsolve = init(prob, CholeskyFactorization(), alias_A = false, alias_b = false)
+linsolve = init(prob, CholeskyFactorization(), alias = LinearAliasSpecifier(alias_A = false, alias_b = false))
 @test solve!(linsolve).u ≈ [-1 / 3, 2 / 3]
 @test solve!(linsolve).u ≈ [-1 / 3, 2 / 3]
 A = [1.0 2.0