docs: add a runbook to update AppInspect CLI Action (#251)

This PR adds a runbook to update AppInspect CLI Action.

Author: artemrys

.licenserc.yaml

@@ -24,3 +24,4 @@ header:
     - "README.md"
     - "LICENSE"
     - ".*"
+    - "runbooks/"

runbooks/update_appinspect_cli_action.md

@@ -0,0 +1,36 @@
+# Runbook to update splunk/appinspect-cli-action
+
+Once Splunk AppInspect team releases AppInspect CLI - we need to make sure that everyone runs the latest version.
+
+## Steps
+
+### Merge splunk/appinspect-cli-action PR
+
+- go to the PR [example](https://github.com/splunk/appinspect-cli-action/pull/127)
+    - check [release notes](https://dev.splunk.com/enterprise/docs/relnotes/relnotes-appinspectcli/whatsnew/) for the new version add release notes link in the PR comment
+    - make sure that the pipeline is green
+        - if not - investigate why and report and issue to the AppInspect team
+    - determine which version of `appinspect-cli-action` needs to be released based on the PR
+        - if it is a bug fix - change "chore" to "fix" in the title of the PR and skip [update section](#update-splunkaddonfactory-workflow-addon-release)
+        - if it is a new feature - change "chore" to "feat" in the title of the PR
+    - get review from the team
+    - "Squash and merge" the PR
+    - wait for the release
+        - make sure that the proper version of the action is released
+
+### Update splunk/addonfactory-workflow-addon-release
+
+- create a PR in this repository with a new version of the action ([example PR](https://github.com/splunk/addonfactory-workflow-addon-release/pull/247))
+    - make sure that PR is towards `main` branch
+    - make sure that the pipeline is green
+    - attach a link to a test run of reusable workflow
+    - get review from the team
+    - "Squash and merge" the PR
+- backport this change to develop right away ([example PR](https://github.com/splunk/addonfactory-workflow-addon-release/pull/239))
+    - create a PR from `main` to `develop`
+    - get review from the team
+    - "Merge pull request" the PR
+
+### Notify teams
+
+- notify development teams in #ta-engineering-dev-all Slack channel (look for the previous announcements to see the format)