fix(ci): install jq before flutter-action in CI and release workflows

subosito/flutter-action@v2 requires jq to parse action inputs.
The ci job in both workflows was missing the install step.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -2,6 +2,11 @@
 
 All notable changes to HouseHoldKeeper are documented in this file.
 
+## [1.1.5] - Unreleased
+
+### Fixed
+- Install jq before Flutter setup in CI and release workflows (required by subosito/flutter-action)
+
 ## [1.1.4] - 2026-03-17
 
 ### Added