Bump acorn from 5.7.3 to 5.7.4 in /samples/sqlservices (#9865)

Bumps [acorn](https://github.com/acornjs/acorn) from 5.7.3 to 5.7.4.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/5.7.3...5.7.4)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

samples/sqlservices/package-lock.json

@@ -42,9 +42,9 @@
             "dev": true
         },
         "acorn": {
-            "version": "5.7.3",
-            "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
-            "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==",
+            "version": "5.7.4",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+            "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==",
             "dev": true
         },
         "agent-base": {