Bump panda from 0.2.1-alpha to 0.3.0-alpha

Bumps [panda](https://github.com/panda-lang/panda) from 0.2.1-alpha to 0.3.0-alpha.
- [Release notes](https://github.com/panda-lang/panda/releases)
- [Commits](panda-lang/panda@0.2.1-alpha...0.3.0-alpha)

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

reposilite-backend/pom.xml

@@ -86,7 +86,7 @@
         <dependency>
             <groupId>org.panda-lang</groupId>
             <artifactId>panda</artifactId>
-            <version>0.2.1-alpha</version>
+            <version>0.3.0-alpha</version>
         </dependency>
         <dependency>
             <groupId>net.dzikoysk</groupId>