[dfg]*: ensure event.kind is correctly set for pipeline errors

[efd6]

What does this PR do?

Modify darktrace, f5, f5_bigip, fim, fireeye, forcepoint_web, fortinet_forticlient, fortinet_fortiedr, fortinet_fortigate, fortinet_fortimail, gcp, github and google_workspace to correctly set event.kind for pipeline errors and ensure error.message is an array.

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

• [ ]

How to test this PR locally

Related issues

• For sei: ensure packages set error.kind to "pipeline_error" in on_failure processor #6582

Screenshots

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• Start Time: 2023-06-20T21:26:26.271+0000

• Duration: 27 min 40 sec

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Passed	321
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Total	321

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (37/37)	💚
Files	100.0% (52/52)	💚 5.172
Classes	100.0% (52/52)	💚 5.172
Methods	96.26% (592/615)	👍 0.592
Lines	93.811% (15187/16189)	👍 2.849
Conditionals	100.0% (0/0)	💚

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

[elasticmachine]

Package darktrace - 1.5.0 containing this change is available at https://epr.elastic.co/search?package=darktrace

[elasticmachine]

Package f5 - 0.16.0 containing this change is available at https://epr.elastic.co/search?package=f5

[elasticmachine]

Package f5_bigip - 1.4.0 containing this change is available at https://epr.elastic.co/search?package=f5_bigip

[elasticmachine]

Package fim - 1.8.0 containing this change is available at https://epr.elastic.co/search?package=fim

[elasticmachine]

Package fireeye - 1.13.0 containing this change is available at https://epr.elastic.co/search?package=fireeye

[elasticmachine]

Package forcepoint_web - 0.4.0 containing this change is available at https://epr.elastic.co/search?package=forcepoint_web

[elasticmachine]

Package fortinet_forticlient - 1.7.0 containing this change is available at https://epr.elastic.co/search?package=fortinet_forticlient

[elasticmachine]

Package fortinet_fortiedr - 1.8.0 containing this change is available at https://epr.elastic.co/search?package=fortinet_fortiedr

[elasticmachine]

Package fortinet_fortigate - 1.14.0 containing this change is available at https://epr.elastic.co/search?package=fortinet_fortigate

[elasticmachine]

Package fortinet_fortimail - 2.4.0 containing this change is available at https://epr.elastic.co/search?package=fortinet_fortimail

[elasticmachine]

Package gcp - 2.22.0 containing this change is available at https://epr.elastic.co/search?package=gcp

[elasticmachine]

Package github - 1.13.0 containing this change is available at https://epr.elastic.co/search?package=github

[elasticmachine]

Package google_workspace - 2.10.0 containing this change is available at https://epr.elastic.co/search?package=google_workspace

[elasticmachine]

Package gcp - 2.22.1 containing this change is available at https://epr.elastic.co/search?package=gcp