Fix version parsing for strings starting with 'v'

Modified the VersionChecker to handle version strings that start with 'v'. This ensures compatibility with different versioning formats and avoids potential errors during version parsing.

src/main/java/net/thenextlvl/arkitektonika/version/VersionChecker.java

@@ -23,7 +23,7 @@ public VersionChecker() {
 
     @Override
     public SemanticVersion parseVersion(String version) {
-        return SemanticVersion.parse(version);
+        return SemanticVersion.parse(version.startsWith("v") ? version.substring(1) : version);
     }
 
     @Override