fix: use local directory path in replace directive

Changed replace directive from version-specific to local directory path
(github.com/Microsoft/go-mssqldb => ./) to ensure it always points to
the current codebase instead of a pinned version. This addresses the
code review feedback.

Co-authored-by: dlevy-msft-sql <194277063+dlevy-msft-sql@users.noreply.github.com>

Author: Copilot

go.mod

@@ -42,4 +42,4 @@ require (
 // This prevents issues on case-sensitive filesystems (Linux) where vendoring
 // might create directories with inconsistent casing.
 // See: https://github.com/golang/go/issues/38342
-replace github.com/Microsoft/go-mssqldb => github.com/microsoft/go-mssqldb v1.7.2
+replace github.com/Microsoft/go-mssqldb => ./