fix(deps): update dependency @adobe/spacecat-shared-rum-api-client to v2.18.4 (#705)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -71,7 +71,7 @@
     "@adobe/spacecat-shared-gpt-client": "1.4.5",
     "@adobe/spacecat-shared-http-utils": "1.9.6",
     "@adobe/spacecat-shared-ims-client": "1.5.4",
-    "@adobe/spacecat-shared-rum-api-client": "2.18.3",
+    "@adobe/spacecat-shared-rum-api-client": "2.18.4",
     "@adobe/spacecat-shared-slack-client": "1.5.4",
     "@adobe/spacecat-shared-utils": "1.26.5",
     "@aws-sdk/client-s3": "3.726.1",