fix(deps): bump @salesforce/core from 8.3.0 to 8.4.0 (#587)

Bumps [@salesforce/core](https://github.com/forcedotcom/sfdx-core) from 8.3.0 to 8.4.0.
- [Release notes](https://github.com/forcedotcom/sfdx-core/releases)
- [Changelog](https://github.com/forcedotcom/sfdx-core/blob/main/CHANGELOG.md)
- [Commits](forcedotcom/sfdx-core@8.3.0...8.4.0)

---
updated-dependencies:
- dependency-name: "@salesforce/core"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -34,7 +34,7 @@
   ],
   "dependencies": {
     "@salesforce/cli-plugins-testkit": "^5.3.25",
-    "@salesforce/core": "^8.3.0",
+    "@salesforce/core": "^8.4.0",
     "@salesforce/kit": "^3.2.1",
     "@salesforce/source-deploy-retrieve": "^12.1.12",
     "@salesforce/ts-types": "^2.0.12",

yarn.lock

@@ -523,10 +523,10 @@
     strip-ansi "6.0.1"
     ts-retry-promise "^0.8.1"
 
-"@salesforce/core@^8.2.8", "@salesforce/core@^8.3.0":
-  version "8.3.0"
-  resolved "https://registry.yarnpkg.com/@salesforce/core/-/core-8.3.0.tgz#b61fb6c0c0dec5664ce12ba62ebe35136ae33878"
-  integrity sha512-HZchC42oGJ5RQsG9HpAb1bT7ohjB31ATDz46ryMvLngMmrfHnyzv2mlIi6UdYkJ/2meH2BJkibHi8paPrtF+/A==
+"@salesforce/core@^8.2.8", "@salesforce/core@^8.3.0", "@salesforce/core@^8.4.0":
+  version "8.4.0"
+  resolved "https://registry.yarnpkg.com/@salesforce/core/-/core-8.4.0.tgz#d2ddfe07994c42b1e917e581e9cf47ad27b97a93"
+  integrity sha512-P+n0+Sp+v6voLTShW2E5sdF7gCUxEXJjNcc9Jtto0ZMyQesmQJ6WGpWmAuRoi+BVYc8OPSlEffndaYDAo/u73g==
   dependencies:
     "@jsforce/jsforce-node" "^3.4.0"
     "@salesforce/kit" "^3.1.6"