Replace usage of test-utils-core with test-utils

Signed-off-by: Johan Haals <johan.haals@gmail.com>

packages/config/package.json

@@ -33,7 +33,7 @@
     "lodash": "^4.17.21"
   },
   "devDependencies": {
-    "@backstage/test-utils-core": "^0.1.2",
+    "@backstage/test-utils": "^0.1.19",
     "@types/jest": "^26.0.7",
     "@types/node": "^14.14.32"
   },

packages/config/src/reader.test.ts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { withLogCollector } from '@backstage/test-utils-core';
+import { withLogCollector } from '@backstage/test-utils';
 import { ConfigReader } from './reader';
 
 const DATA = {