Revert "chore(deps): bump @material-table/core from 3.1.0 to 4.3.19"

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/core-components/package.json

@@ -33,7 +33,7 @@
     "@backstage/core-plugin-api": "^0.6.0",
     "@backstage/errors": "^0.2.0",
     "@backstage/theme": "^0.2.14",
-    "@material-table/core": "^4.3.19",
+    "@material-table/core": "^3.1.0",
     "@material-ui/core": "^4.12.2",
     "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "4.0.0-alpha.57",