fastly dashboard item/update

Update a custom dashboard item.

$ fastly dashboard item/update --dashboard-id=DASHBOARD-ID --item-id=ITEM-ID

Key	Required?	Description
`--dashboard-id`	Yes	ID of the Dashboard containing the item
`--item-id`	Yes	ID of the Item to be updated
`--json`	No	Render output as JSON
`--title`	No	A human-readable title for the dashboard item
`--subtitle`	No	A human-readable subtitle for the dashboard item. Often a description of the visualization
`--span`	No	The number of columns for the dashboard item to span. Dashboards are rendered on a 12-column grid on "desktop" screen sizes
`--source-type`	No	The source of the data to display
`--metric`	No	The metrics to visualize. Valid options depend on the selected data source. Set flag multiple times to include multiple metrics
`--visualization-type`	No	The type of visualization to display. Currently, only "chart" is supported
`--calculation-method`	No	The aggregation function to apply to the dataset
`--format`	No	The units to use to format the data
`--plot-type`	No	The type of chart to display

Key	Required?	Description
`--help`	No	Show context-sensitive help.
`--accept-defaults`	No	Accept default options for all interactive prompts apart from Yes/No confirmations
`--auto-yes`	No	Answer yes automatically to all Yes/No confirmations. This may suppress security warnings
`--debug-mode`	No	Print API request and response details (NOTE: can disrupt the normal CLI flow output formatting)
`--enable-sso`	No	Enable Single-Sign On (SSO) for current profile execution (see also: 'fastly sso')
`--non-interactive`	No	Do not prompt for user input - suitable for CI processes. Equivalent to --accept-defaults and --auto-yes
`--profile`	No	Switch account profile for single command execution (see also: 'fastly profile switch')
`--quiet`	No	Silence all output except direct command output. This won't prevent interactive prompts (see: --accept-defaults, --auto-yes, --non-interactive)
`--token`	No	Fastly API token (or via FASTLY_API_TOKEN)
`--verbose`	No	Verbose logging