fix: add llvm 13 support

Author: aminya

dist/setup_cpp.js

@@ -47,6 +47,7 @@ export const VERSIONS: Set<string> = getVersions([
   "11.1.0",
   "12.0.0",
   "12.0.1",
+  "13.0.0",
 ])
 
 //================================================
@@ -103,7 +104,7 @@ function getDarwinUrl(version: string): string | null {
  * This is useful when there were binaries released for the Linux (Ubuntu) platform for the last RC version but not for
  * the actual release version.
  */
-const UBUNTU_RC: Map<string, string> = new Map([["12.0.1", "12.0.1-rc4"]])
+const UBUNTU_RC: Map<string, string> = new Map()
 
 /** The (latest) Ubuntu versions for each LLVM version. */
 const UBUNTU: { [key: string]: string } = {
@@ -137,11 +138,12 @@ const UBUNTU: { [key: string]: string } = {
   "11.0.1": "-ubuntu-16.04",
   "11.1.0": "-ubuntu-16.04",
   "12.0.0": "-ubuntu-20.04",
-  "12.0.1-rc4": "-ubuntu-21.04",
+  "12.0.1": "-ubuntu-16.04",
+  "13.0.0": "-ubuntu-20.04",
 }
 
 /** The latest supported LLVM version for the Linux (Ubuntu) platform. */
-const MAX_UBUNTU: string = "12.0.1-rc4"
+const MAX_UBUNTU: string = "13.0.0"
 
 /** Gets an LLVM download URL for the Linux (Ubuntu) platform. */
 function getLinuxUrl(versionGiven: string): string {