[okta] Add tags.yml file so that integration's dashboards and saved searches are tagged with 'Security Solution'

[marc-gr]

Proposed commit message

Add tags.yml file so that integration's dashboards and saved searches are tagged with 'Security Solution' and displayed in the Security Solution UI.

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.

Related issues

• Relates Add asset tags to security integrations #7483

[elasticmachine]

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

[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2023-10-02T09:14:21.573+0000

• Duration: 19 min 35 sec

Test stats 🧪

Test	Results
Failed	0
Passed	8
Skipped	0
Total	8

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (1/1)	💚
Files	100.0% (1/1)	💚 3.431
Classes	100.0% (1/1)	💚 3.431
Methods	100.0% (19/19)	💚 7.927
Lines	92.026% (577/627)	👍 4.043
Conditionals	100.0% (0/0)	💚

[kcreddy]

LGTM 👍🏼

[elasticmachine]

Package okta - 2.3.0 containing this change is available at https://epr.elastic.co/search?package=okta