Update default JFrog CLI version to 2.90.0

Is your feature request related to a problem? Please describe.

The current default version (2.88.0) causes CI/CD pipeline failures when using Maven Docker images with floating tags like maven:3-amazoncorretto-25-al2023. This was fixed in jfrog-cli v2.90.0.

Describe the solution you'd like to see

Update the default version in action.yml from 2.88.0 to 2.90.0:

inputs:
    version:
        description: "JFrog CLI Version"
        default: "2.90.0"
        required: false

Describe alternatives you've considered

1. Pin the Maven image to a specific tag:

   container: maven:3.9.11-amazoncorretto-25-al2023
   

2. Explicitly specify the CLI version in every workflow:

   - uses: jfrog/setup-jfrog-cli@v4
     with:
       version: 2.90.0
   

Both work but require changes to existing workflows.

Additional context

• Fix released in: https://github.com/jfrog/jfrog-cli/releases/tag/v2.90.0
• Tested and confirmed working with version: 2.90.0 and version: latest

Open action.yml and locate the inputs.version definition. Update the default from 2.88.0 to 2.90.0, then verify the file retains the requested input description and optional setting; done means new workflows use JFrog CLI 2.90.0 by default.