Only process .json and .toml files in the ProcessResources gradle task.

build.gradle.kts

@@ -78,7 +78,9 @@ allprojects {
         }
         withType(ProcessResources::class) {
             val modVersionPair: Pair<String, String> = "mod_version" to (rootProject.version as String)
-            expand(mutableMapOf(modVersionPair))
+            filesMatching(listOf("*.json", "*.toml")) {
+                expand(mutableMapOf(modVersionPair))
+            }
         }
     }
 }