Investigate warning in Github Actions related to `set-output` deprecation

[praveek]

Task description

Investigate warning in Github Actions related to set-output deprecation

Warning: The set-output command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

https://github.com/adobe/aepsdk-notificationcontent-ios/actions/runs/8885428485/job/24396760090#step:13:11

Additional implementation details or code snippet(s)

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