Go back to 1.12.2 for spigot base version

pom.xml

@@ -35,7 +35,7 @@
 		<dependency>
 			<groupId>org.spigotmc</groupId>
 			<artifactId>spigot-api</artifactId>
-			<version>1.17.1-R0.1-SNAPSHOT</version>
+			<version>1.12.2-R0.1-SNAPSHOT</version>
 			<scope>provided</scope>
 		</dependency>
 		<dependency>