[o365_audit] Add NewValue field

[Mikaayenson]

Adds the o365.audit.NewValue field. It is present in the filebeat pipeline.js and available for use in a query (per the screenshot), but not defined in either Beats or the Elastic Agent integration mappings.

What does this PR do?

Updates the fields.yml to include the 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.

[elasticmachine]

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

[elasticmachine]

💚 Build Succeeded

the below badges are clickable and redirect to their specific view in the CI or DOCS

Expand to view the summary

Build stats

• Start Time: 2023-02-02T03:17:29.355+0000

• Duration: 14 min 3 sec

Test stats 🧪

Test	Results
Failed	0
Passed	24
Skipped	0
Total	24

🤖 GitHub comments

Expand to view the GitHub comments

To re-run your PR in the CI, just comment with:

• /test : Re-trigger the build.

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (1/1)	💚
Files	100.0% (1/1)	💚 12.5
Classes	100.0% (1/1)	💚 12.5
Methods	100.0% (16/16)	💚 16.484
Lines	82.155% (732/891)	👎 -10.559
Conditionals	100.0% (0/0)	💚

[kcreddy]

LGTM

[Mikaayenson]

@efd6 Anything else on this PR?

[efd6]

Thanks

[Mikaayenson]

👋 @efd6 For this the changelog shows that the minor has been already bumped by another Pr. Should I update the minor again or patch version?

[efd6]

Bump the minor, 1.12.0.

[elasticmachine]

Package o365 - 1.12.0 containing this change is available at https://epr.elastic.co/search?package=o365