openssl: T9083: fix APT detected package downgrade despite identical versions

VyOS rolling APT repo (packages.vyos.net/repositories/rolling) publishing its
own openssl/libssl3 packages, pinned at priority 600 (higher than Debian's 500)
causes a "poisoning" of the APT cache policy inside the chroot:

openssl:
  Installed: 3.0.20-1~deb12u2
  Candidate: 3.0.20-1~deb12u2
  Version table:
    * 3.0.20-1~deb12u2 500   <- debian bookworm + bookworm-security
    * 3.0.20-1~deb12u2 600   <- packages.vyos.net rolling  (same version string, higher pin)
    * 3.0.17-1~deb12u2 500   <- bookworm-updates

This results in APT seeing a version-string tie between Debian's build and the
VyOS repo build of the same package and, because of the pin-priority swap,
classifies switching to the VyOS repo copy as a "downgrade".

This is fixed by appending a clear VyOS related marked to the package version,
preventing any possible downgrade detection.

Signed-off-by: Date Huang <tjjh89017@hotmail.com>
Co-authored-by: Christian Breunig <christian@breunig.cc>

Author: tjjh89017

scripts/package-build/openssl/package.toml

@@ -2,4 +2,4 @@
 name = "openssl"
 commit_id = "debian/openssl-3.0.20-1_deb12u2"
 scm_url = "https://salsa.debian.org/debian/openssl.git"
-build_cmd = "dpkg-buildpackage -us -uc -tc -b"
+build_cmd = "sed -i '1s/)/+vyos1)/' debian/changelog && dpkg-buildpackage -us -uc -tc -b"