fix(Service Release): prevent only spaces in short & long description

[charmi-v]

Description

Service Release:

• Updated regex to prevent descriptions consisting only of spaces.
• Revised user validation error message.

Why

Validation error: The regex validation permits spaces as valid characters in the description.
However, it has a limitation: it allows users to pass field validation even if the description consists only of spaces.

Issue

#1021

Checklist

Please delete options that are not relevant.

• I have followed the contributing guidelines
• I have performed a self-review of my own code
• I have successfully tested my changes locally

[MaximilianHauer]

as mentioned in #1021 (comment)

If someone wants to provide low quality on purpose he will always be able to execute it.
to improve it a bit we could check for at least one letter or digit in the regex but even this wouldn't protect us fully.
proposal : /^(?=.*[a-zA-Z0-9])(?! *$).{10,1999}$/
Explanation:

• Are between 10 and 1999 characters long.
• Do not consist solely of whitespace characters.
• Contain at least one letter or digit.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud