fix(deps): bump @salesforce/apex-node from 8.4.16 to 8.4.21

Bumps [@salesforce/apex-node](https://github.com/forcedotcom/salesforcedx-apex) from 8.4.16 to 8.4.21.
- [Release notes](https://github.com/forcedotcom/salesforcedx-apex/releases)
- [Changelog](https://github.com/forcedotcom/salesforcedx-apex/blob/main/CHANGELOG.md)
- [Commits](forcedotcom/salesforcedx-apex@8.4.16...8.4.21)

---
updated-dependencies:
- dependency-name: "@salesforce/apex-node"
  dependency-version: 8.4.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -10,7 +10,7 @@
     "@inquirer/prompts": "^7.8.3",
     "@oclif/core": "^4.10.3",
     "@oclif/multi-stage-output": "^0.8.34",
-    "@salesforce/apex-node": "^8.4.16",
+    "@salesforce/apex-node": "^8.4.21",
     "@salesforce/core": "^8.28.3",
     "@salesforce/kit": "^3.2.4",
     "@salesforce/plugin-info": "^3.4.122",

yarn.lock

@@ -1498,13 +1498,13 @@
   resolved "https://registry.yarnpkg.com/@rtsao/scc/-/scc-1.1.0.tgz#927dd2fae9bc3361403ac2c7a00c32ddce9ad7e8"
   integrity sha512-zt6OdqaDoOnJ1ZYsCYGt9YmWzDXl4vQdKTyJev62gFhRGKdx7mcT54V9KIjg+d2wi9EXsPvAPKe7i7WjfVWB8g==
 
-"@salesforce/apex-node@^8.4.16":
-  version "8.4.16"
-  resolved "https://registry.yarnpkg.com/@salesforce/apex-node/-/apex-node-8.4.16.tgz#4f65a0d1cd9a36354bb0bf3bf19ef2ed5cc89ad2"
-  integrity sha512-4oXrhCKkXnJGJf0POaPMaMS1JGW+6U5Ob8LeMJRRGfh8pBzU9BXC9LAQJzwbDPlnENbNbQfZ5JtOHdivLb+coA==
+"@salesforce/apex-node@^8.4.21":
+  version "8.4.21"
+  resolved "https://registry.yarnpkg.com/@salesforce/apex-node/-/apex-node-8.4.21.tgz#34ffa2d6570cf4cb07f5b14c0ecd0501508b56f9"
+  integrity sha512-pvLJ9ng7YlKh36eyfR5l1LicT2MEVJaZ9jtXiwS/gta2M54P32RNJY9wKy8JvAak4S3X7aEMf/jwns0VUWQFuQ==
   dependencies:
-    "@salesforce/core" "^8.27.1"
-    "@salesforce/kit" "^3.2.4"
+    "@salesforce/core" "^8.28.1"
+    "@salesforce/kit" "^3.2.6"
     "@types/istanbul-reports" "^3.0.4"
     fast-glob "^3.3.2"
     faye "1.4.1"