Enhance documentation for Dependabot interval options (#58055)

Co-authored-by: mc <42146119+mchammer01@users.noreply.github.com>

Author: kurgol

content/code-security/dependabot/working-with-dependabot/dependabot-options-reference.md

@@ -610,6 +610,8 @@ Reviewers must have at least read access to the repository.
 | `cronjob` | Defines the cron expression if the interval type is `cron`. |
 | `timezone` | Specify the timezone of the `time` value.  |
 
+{% ifversion fpt or ghec %}
+
 ### `interval`
 
 Supported values: `daily`, `weekly`, `monthly`, `quarterly`, `semiannually`, `yearly`, or `cron`
@@ -624,6 +626,21 @@ Each package manager **must** define a schedule interval.
 * Use `yearly` to run on the first day of January.
 * Use `cron` for cron expression based scheduling option. See [`cronjob`](#cronjob).
 
+{% elsif ghes %}
+
+### `interval`
+
+Supported values: `daily`, `weekly`, `monthly`, or `cron`
+
+Each package manager **must** define a schedule interval.
+
+* Use `daily` to run on every weekday, Monday to Friday.
+* Use `weekly` to run once a week, by default on Monday.
+* Use `monthly` to run on the first day of each month.
+* Use `cron` for cron expression based scheduling option. See [`cronjob`](#cronjob).
+
+{% endif %}
+
 By default, {% data variables.product.prodname_dependabot %} randomly assigns a time to apply all the updates in the configuration file. You can use the `time` and `timezone` parameters to set a specific runtime for all intervals.  If you use a `cron` interval, you can define the update time with a `cronjob` expression.
 
 ### `day`