[ Reason ]
Upstream fixed CVE-2026-107634 and CVE-2026-107635 with dislocker
0.7.4, each by a dedicated commit.  With this upload I aim at fixing
the CVEs also for trixie applying those commits, slightly backported.

[ Impact ]
Without this update the listed CVEs would stay unfixed in trixie.

[ Tests ]
1) dislocker was successfully built and tested on debusine, see
https://debusine.debian.net/debian/developers/work-request/1517686/
2) The local-only autopkgtest from dislocker/0.7.4-1 was run
successfully on dislocker/0.7.3+git20240607-3+deb13u1

[ Risks ]
I consider the risk low as dislocker is a leaf package and
libdislocker0.7t64 is only used by dislocker itself.

[ Checklist ]
  [*] *all* changes are documented in the d/changelog
  [*] I reviewed all changes and I approve them
  [*] attach debdiff against the package in (old)stable
  [*] the issue is verified as fixed in unstable