License update - Batch 3

[mossmana]

Updates the license headers for:

• case_study/code_size/static_files/animal_app_new_apk_analysis.json
• case_study/code_size/static_files/animal_app_old_apk_analysis.json
• case_study/code_size/static_files/encryption_app_new_apk_analysis.json
• case_study/code_size/static_files/encryption_app_new_v8_snapshot.json
• case_study/code_size/static_files/encryption_app_old_apk_analysis.json
• case_study/code_size/static_files/encryption_app_old_v8_snapshot.json

#8216

Pre-launch Checklist

• I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
• I read the [Tree Hygiene] wiki page, which explains my responsibilities.
• I read the [Flutter Style Guide] recently, and have followed its advice.
• I signed the [CLA].
• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or there is a reason for not adding tests.