Bumping version to 4.28.1

	<name>RainLoop</name>

	<summary>RainLoop Webmail</summary>

	<description>Simple, modern and fast web-based email client. After enabling in Nextcloud, go to Nextcloud admin panel, "Additionnal settings" and you will see a "Rainloop webmail" section. There, click on the link to go to the Rainloop admin panel. The default user/password is admin/12345.</description>

	<version>4.28.0</version>

	<version>4.28.1</version>

	<licence>AGPL</licence>

	<author>RainLoop Team & Pierre-Alain Bandinelli</author>

	<require>6.0</require>

4.28.0

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4.28.1