[crowdstrike] add date parsing for BiosReleaseDate field

[leehinman]

What does this PR do?

• Adds date parsing for the BiosReleaseDate field

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.

Author's Checklist

• Checked to make sure other date fields were being parsed

How to test this PR locally

elastic-package clean
elastic-package check
elastic-package stack up -d
eval "$(elastic-package stack shellinit)"
elastic-package test

[elasticmachine]

Pinging @elastic/security-external-integrations (Team:Security-External Integrations)

[elasticmachine]

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Build stats

• Start Time: 2022-03-23T13:23:54.406+0000

• Duration: 17 min 35 sec

Test stats 🧪

Test	Results
Failed	0
Passed	13
Skipped	0
Total	13

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