update openssl backend to point to new location

[gdams]

No description provided.

[Copilot]

Pull request overview

Updates the OpenSSL crypto backend integration to use the new github.com/microsoft/go-crypto-openssl module layout, aligning linker/internal backend references and the dependency upgrader with the new repository location.

Changes:

• Switched vendored linker allowlist entries from github.com/golang-fips/openssl/v2/... to github.com/microsoft/go-crypto-openssl/....
• Updated systemcrypto backend imports and dependency rules from github.com/golang-fips/openssl/v2 to github.com/microsoft/go-crypto-openssl (notably the openssl subpackage).
• Updated the eng/_util upgrader configuration to fetch OpenSSL from the new GitHub repository and track the main branch.

Patches are happy!

Show a summary per file

File	Description
patches/0004-Use-crypto-backends.patch	Updates linker internal package list to the new vendored OpenSSL backend package paths.
patches/0003-Implement-crypto-internal-backend.patch	Updates systemcrypto backend imports and dependency rules to the new go-crypto-openssl module/package paths.
eng/_util/cmd/upgrader/upgrader.go	Points the dependency upgrader at the new OpenSSL backend repository/module and updates the tracked ref.

Copilot's findings

• Files reviewed: 3/4 changed files
• Comments generated: 0