fix(borg): ⬆️ Update borg to version 1.2.5. See Notes!

Upgrade to the latest release of borg (1.2.5) which addresses the archives spoofing vulnerability (CVE-2023-36811).

BREAKING: While this is a server only image I will mark this release as BREAKING CHANGE. See  https://github.com/borgbackup/borg/blob/1.2.5-cvedocs/docs/changes.rst#pre-125-archives-spoofing-vulnerability-cve-2023-36811 for a HOWTO upgrade.

Dockerfile

@@ -1,7 +1,7 @@
 ################################################################################
 #                             PIN PACKAGE VERSIONS                             #
 ################################################################################
-ARG BORGBACKUP_VERSION="1.2.4"
+ARG BORGBACKUP_VERSION="1.2.5"
 ARG PYTHON_VERSION="3.11"
 ARG OPENSSH_VERSION="9.3_p2-r0"
 ARG SED_VERSION="4.9-r2"