config(vitest): fixer le seuil de coverage à 80%

vitest.config.mts

@@ -14,6 +14,12 @@ export default defineConfig({
     coverage: {
       provider: 'v8',
       reporter: ['text', 'html', 'lcov'],
+      thresholds: {
+        statements: 80,
+        branches: 80,
+        functions: 80,
+        lines: 80,
+      },
       include: ['src/**/*.{ts,tsx}'],
       exclude: [
         'src/**/*.test.{ts,tsx}',