fix(deps): bump @salesforce/core from 8.28.3 to 8.28.4

Bumps [@salesforce/core](https://github.com/forcedotcom/sfdx-core) from 8.28.3 to 8.28.4.
- [Release notes](https://github.com/forcedotcom/sfdx-core/releases)
- [Changelog](https://github.com/forcedotcom/sfdx-core/blob/main/CHANGELOG.md)
- [Commits](forcedotcom/sfdx-core@8.28.3...8.28.4)

---
updated-dependencies:
- dependency-name: "@salesforce/core"
  dependency-version: 8.28.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package.json

@@ -42,7 +42,7 @@
   ],
   "bugs": "https://github.com/salesforcecli/plugin-custom-metadata/issues",
   "dependencies": {
-    "@salesforce/core": "^8.28.3",
+    "@salesforce/core": "^8.28.4",
     "@salesforce/sf-plugins-core": "^11.3.12",
     "csv-parse": "^5.6.0",
     "fast-xml-parser": "^5.7.1"

yarn.lock

@@ -1815,10 +1815,10 @@
     strip-ansi "6.0.1"
     ts-retry-promise "^0.8.1"
 
-"@salesforce/core@^8.23.1", "@salesforce/core@^8.28.1", "@salesforce/core@^8.28.3", "@salesforce/core@^8.5.1":
-  version "8.28.3"
-  resolved "https://registry.yarnpkg.com/@salesforce/core/-/core-8.28.3.tgz#1344dc408833fb2a6ac19e6c4c09f846b6593ce3"
-  integrity sha512-DDAeHVwDO8wUlqEGwfp8Vuu7Vp7K+hpubKu6baWkHAXiO1u7ZbQkvwCbpPz9JiYEXVUBvP11JtBQ7zOUIPShlQ==
+"@salesforce/core@^8.23.1", "@salesforce/core@^8.28.1", "@salesforce/core@^8.28.3", "@salesforce/core@^8.28.4", "@salesforce/core@^8.5.1":
+  version "8.28.4"
+  resolved "https://registry.yarnpkg.com/@salesforce/core/-/core-8.28.4.tgz#98920d62c2b2a7fa025af38c74bdf6687d91b0a8"
+  integrity sha512-XQ0BBSetdW9cu36pu8ig5ZBX3oAbDSSH4djHkSU3iAzjLdTygEPIBVtKNeyj1++GmCy0rRiLr/yqoFYr21+GuQ==
   dependencies:
     "@jsforce/jsforce-node" "^3.10.13"
     "@salesforce/kit" "^3.2.4"