chore: TZ=UTC for unit testing

Author: sharevb

package.json

@@ -25,10 +25,10 @@
     "dev": "vite",
     "build": "vue-tsc --noEmit && . ./set_node_mem.sh && vite build",
     "preview": "vite preview --port 5050",
-    "test": "npm run test:unit",
-    "test:unit": "vitest --environment jsdom",
-    "test:e2e": "playwright test",
-    "test:e2e:dev": "BASE_URL=http://localhost:5173 NO_WEB_SERVER=true playwright test",
+    "test": "TZ=UTC npm run test:unit",
+    "test:unit": "TZ=UTC vitest --environment jsdom",
+    "test:e2e": "TZ=UTC playwright test",
+    "test:e2e:dev": "TZ=UTC BASE_URL=http://localhost:5173 NO_WEB_SERVER=true playwright test",
     "coverage": "vitest run --coverage",
     "typecheck": "vue-tsc --noEmit -p tsconfig.vitest.json --composite false",
     "lint": "eslint src --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --ignore-path .gitignore",