chore(deps): update dependency supertest to v7

Author: renovate[bot]

package.json

@@ -98,7 +98,7 @@
     "@kazupon/eslint-config": "^0.45.0",
     "@kazupon/prettier-config": "^0.2.0",
     "@types/node": "^24.12.0",
-    "@types/supertest": "^2.0.16",
+    "@types/supertest": "^7.0.0",
     "@vitest/coverage-v8": "catalog:vitest",
     "@vitest/eslint-plugin": "^1.6.9",
     "bumpp": "^9.11.1",
@@ -127,7 +127,7 @@
     "pkg-types": "^1.3.1",
     "playwright": "^1.58.2",
     "prettier": "^3.8.1",
-    "supertest": "^6.3.3",
+    "supertest": "^7.0.0",
     "typedoc": "^0.28.17",
     "typedoc-plugin-markdown": "^4.10.0",
     "typescript": "^5.9.3",