chore(deps): bump driver to 4.6.0 MONGOSH-1217 (#1282)

This also means dropping the FLE2 feature flag.

Author: addaleax

package-lock.json

@@ -123,7 +123,7 @@
     "karma-typescript": "^5.5.1",
     "lerna": "^4.0.0",
     "mocha": "^7.1.2",
-    "mongodb": "^4.5.0",
+    "mongodb": "^4.6.0",
     "mongodb-download-url": "^1.1.2",
     "mongodb-js-precommit": "^2.0.0",
     "nock": "^13.0.11",

package.json

@@ -240,13 +240,7 @@ describe('FLE tests', () => {
     skipIfServerVersion(testServer, '< 6.0'); // FLE2 only available on 6.0+
 
     it('drops fle2 collection with all helper collections when encryptedFields options are in listCollections', async() => {
-      const shell = TestShell.start({
-        args: ['--nodb'],
-        env: {
-          ...process.env,
-          MONGOSH_FLE2_SUPPORT: 'true'
-        },
-      });
+      const shell = TestShell.start({ args: ['--nodb'] });
       const uri = JSON.stringify(await testServer.connectionString());
 
       await shell.waitForPrompt();