Modernize for Go 1.26 (#232)

This change replaces all uses of pointer utils with the new `new`
function which does the same job.

Signed-off-by: Philip Laine <philip.laine@gmail.com>

internal/util/ptr.go

@@ -1,8 +0,0 @@
-// SPDX-License-Identifier: BSD-3-Clause
-
-package util
-
-// Ptr return pointer to any value for API purposes
-func Ptr[T any, PT *T](x T) PT {
-	return &x
-}