Bump flatlaf.version from 3.6.2 to 3.7

Bumps `flatlaf.version` from 3.6.2 to 3.7.

Updates `com.formdev:flatlaf` from 3.6.2 to 3.7
- [Release notes](https://github.com/JFormDesigner/FlatLaf/releases)
- [Changelog](https://github.com/JFormDesigner/FlatLaf/blob/main/CHANGELOG.md)
- [Commits](JFormDesigner/FlatLaf@3.6.2...3.7)

Updates `com.formdev:flatlaf-extras` from 3.6.2 to 3.7
- [Release notes](https://github.com/JFormDesigner/FlatLaf/releases)
- [Changelog](https://github.com/JFormDesigner/FlatLaf/blob/main/CHANGELOG.md)
- [Commits](JFormDesigner/FlatLaf@3.6.2...3.7)

---
updated-dependencies:
- dependency-name: com.formdev:flatlaf
  dependency-version: '3.7'
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.formdev:flatlaf-extras
  dependency-version: '3.7'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

sdmx-dl-desktop/pom.xml

@@ -20,7 +20,7 @@
     <properties>
         <project.x.mainClass>sdmxdl.desktop.Main</project.x.mainClass>
         <ikonli.version>2.6.0</ikonli.version>
-        <flatlaf.version>3.6.2</flatlaf.version>
+        <flatlaf.version>3.7</flatlaf.version>
     </properties>
 
     <dependencyManagement>