fix: mongodb-runner usage and default version to 6.0.2

Author: Moumouls

.gitignore

@@ -59,3 +59,5 @@ lib/
 
 # Redis Dump
 dump.rdb
+
+_mongodb_runner

package.json

@@ -127,16 +127,16 @@
     "test:mongodb:6.0.2": "npm run test:mongodb --dbversion=6.0.2",
     "test:mongodb:7.0.1": "npm run test:mongodb --dbversion=7.0.1",
     "test:postgres:testonly": "cross-env PARSE_SERVER_TEST_DB=postgres PARSE_SERVER_TEST_DATABASE_URI=postgres://postgres:password@localhost:5432/parse_server_postgres_adapter_test_database npm run testonly",
-    "pretest": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=5.3.2} MONGODB_TOPOLOGY=${MONGODB_TOPOLOGY:=standalone} mongodb-runner start -t ${MONGODB_TOPOLOGY} --version ${MONGODB_VERSION} -- --port 27017",
-    "testonly": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=5.3.2} MONGODB_TOPOLOGY=${MONGODB_TOPOLOGY:=standalone} TESTING=1 jasmine",
+    "pretest": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=6.0.2} MONGODB_TOPOLOGY=${MONGODB_TOPOLOGY:=standalone} mongodb-runner start -t ${MONGODB_TOPOLOGY} --version ${MONGODB_VERSION} --runnerDir ./_mongodb_runner -- --port 27017",
+    "testonly": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=6.0.2} MONGODB_TOPOLOGY=${MONGODB_TOPOLOGY:=standalone} TESTING=1 jasmine",
     "test": "npm run testonly",
-    "posttest": "cross-env mongodb-runner stop --all",
-    "coverage": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=5.3.2} MONGODB_TOPOLOGY=${MONGODB_TOPOLOGY:=standalone} TESTING=1 nyc jasmine",
+    "posttest": "cross-env mongodb-runner stop --all --runnerDir ./_mongodb_runner",
+    "coverage": "cross-env MONGODB_VERSION=${MONGODB_VERSION:=6.0.2} MONGODB_TOPOLOGY=${MONGODB_TOPOLOGY:=standalone} TESTING=1 nyc jasmine",
     "start": "node ./bin/parse-server",
     "prettier": "prettier --write {src,spec}/{**/*,*}.js",
     "prepare": "npm run build",
     "postinstall": "node -p 'require(\"./postinstall.js\")()'",
-    "madge:circular": "node_modules/.bin/madge ./src --circular"
+    "madge:circular": "node_modules/.bin/madge ./src --circular",
   },
   "engines": {
     "node": ">=18.0.0 <19.0.0 || >=19.0.0 <20.0.0 || >=20.0.0 <21.0.0 || >=22.0.0 <23.0.0"