[rubrik] Modify CEL program to parse long and int values

[devamanv]

Proposed commit message

This PR fixes an issue in the tasks datastream where parsing a GraphQL response containing a longValue field would result in an error. Previously, only intValue was supported.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.
• I have verified that any added dashboard complies with Kibana's Dashboard good practices

Author's Checklist

• [ ]

How to test this PR locally

Related issues

• Closes https://github.com/elastic/obs-integration-team/issues/661

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cc @devamanv