chore(release): bump to 1.7.6, follow the CI-required release-notes shape

Bumps Cargo.toml + Cargo.lock to 1.7.6. Also fixes a CI-shape defect the
previous release left behind: dev's CHANGELOG still said
`## [1.7.5] — UNRELEASED` after 1.7.5 shipped (release-orchestrate dated
main but did not push a fresh UNRELEASED heading back to dev). Corrects
that here so the changelog job accepts 1.7.6 on the way to qa:

  ## [1.7.6] — UNRELEASED
    - Version aligned; unified release driven by freemkv 1.7.6.
  ## [1.7.5] — 2026-09-23
    - Version aligned (or actual content, per the shipped main entry).

The driver for 1.7.6 is the freemkv Linux desktop shell (GTK4 +
libadwaita) + rip-finished desktop notification (issue #56).

CHANGELOG.md

@@ -1,6 +1,12 @@
 # Changelog
 
-## [1.7.5] — UNRELEASED
+## [1.7.6] — UNRELEASED
+
+### Changed
+
+- Version aligned to 1.7.6 for the unified release. No functional changes to this crate; the release is driven by the freemkv 1.7.6 Linux desktop shell (GTK4 + libadwaita) and the rip-finished desktop notification (issue #56).
+
+## [1.7.5] — 2026-09-23
 
 ### Changed
 

Cargo.lock

@@ -221,7 +221,7 @@ dependencies = [
 
 [[package]]
 name = "freemkv-unlock"
-version = "1.7.4"
+version = "1.7.6"
 dependencies = [
  "aes",
  "base64",
@@ -317,7 +317,7 @@ checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2"
 
 [[package]]
 name = "libfreemkv"
-version = "1.7.4"
+version = "1.7.6"
 dependencies = [
  "aes",
  "base64",
@@ -839,12 +839,12 @@ dependencies = [
 
 [[patch.unused]]
 name = "freemkv-engine"
-version = "1.7.4"
+version = "1.7.6"
 
 [[patch.unused]]
 name = "freemkv-i18n"
-version = "1.7.4"
+version = "1.7.6"
 
 [[patch.unused]]
 name = "freemkv-keysources"
-version = "1.7.4"
+version = "1.7.6"

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "libfreemkv"
-version = "1.7.4"
+version = "1.7.6"
 edition = "2024"
 rust-version = "1.88"
 license = "MIT"