Bump narya to 1.20 for the Bang TLS work

A clean minor-version bump (retiring the Epic 2 -bangN patched-fork suffix —
that scheme is superseded; we now own these forks outright and version them
normally). GitHub Packages won't let us re-publish 1.19, and 1.20 makes the
TLS-capable build obvious in dependency listings.

core/pom.xml

@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.threerings</groupId>
     <artifactId>narya-parent</artifactId>
-    <version>1.19</version>
+    <version>1.20</version>
   </parent>
 
   <artifactId>narya</artifactId>

pom.xml

@@ -5,7 +5,7 @@
   <groupId>com.threerings</groupId>
   <artifactId>narya-parent</artifactId>
   <packaging>pom</packaging>
-  <version>1.19</version>
+  <version>1.20</version>
 
   <name>Narya Parent</name>
   <description>Facilities for making networked multiplayer games.</description>

tools/pom.xml

@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.threerings</groupId>
     <artifactId>narya-parent</artifactId>
-    <version>1.19</version>
+    <version>1.20</version>
   </parent>
 
   <artifactId>narya-tools</artifactId>