treewide: Increase project-version to "1.43.0~alpha0"

to ensure that the version-number of built packages will be higher than
the version-number of packages with the previous version.

Part-of: <https://gitlab.gnome.org/World/Phosh/squeekboard/-/merge_requests/701>

debian/changelog

@@ -1,3 +1,39 @@
+squeekboard (1.43.0~alpha0) UNRELEASED; urgency=medium
+
+  [ MoonlightWave-12 ]
+  * layouts: Change `Shift_L` to `show_upper`
+  * layouts: Clean up spaces in layout-files
+  * layouts: Replace `altline` with `special-2` and `wide` with `special-3`
+  * layouts: Rename `BackSpace-special-3` to `BackSpace-wide`
+  * layouts: Rename `Space` to `space`
+  * scaling: Keep proportions of labels and icons when stretching layouts
+  * layouts: Improve `number`-layout
+  * layouts: Sort outlines alphabetically
+  * submission.rs: Restore active modifiers after changing keymaps
+  * layouts: Adjust layout-sizes to the correct aspect-ratios
+  * layouts: Add emojis from Unicode 16.0 to the emoji-layout
+  * keyboard.rs: Reword a comment
+  * keyboard.rs: Add more keycodes and sort those
+  * keyboard.rs: Add keycode to the keymap with BackSpace if there is no other
+  * keyboard.rs: Format code better
+  * input: Add the `Shift`-modifier
+  * doc/layouts.md: Update recommended settings for creating layouts
+  * layouts: Add `Shift`-button to the terminal-layouts
+  * Cargo.lock: Update dependencies
+  * treewide: Increase project-version to "1.43.0~alpha0"
+
+  [ Sebastian Krzyszkowiak ]
+  * keyboard: Only generate keycodes from an allowlist
+
+  [ Alexander Shopov ]
+  * Add Bulgarian translation
+
+  [ Arnaud Ferraris ]
+  * Cargo.toml: use xkbcommon 0.8
+  * parsing: fix test for new xkbcommon version
+
+ -- MoonlightWave-12 <135532-MoonlightWave-12@users.noreply.gitlab.gnome.org>  Wed, 06 Nov 2024 20:20:38 +0100
+
 squeekboard (1.42.0) experimental; urgency=medium
 
   * */meson.build: Fix warnings about features deprecated since Meson 0.56