Update package version to 20.1.7

pkg.info

@@ -1,6 +1,6 @@
 name: llvm
 description: A collection of modular and reusable compiler and toolchain technologies
-version: 18.1.7
+version: 20.1.7
 url: https://llvm.org
 license: Apache2-with-llvm-exception
 architecture: any
@@ -8,7 +8,7 @@ make_depends: ["cmake","libffi","ncurses","ninja","python3","zlib","zstd"]
 type: source
 split_packages:
   - name: llvm
-    depends: ["perl"]
+    depends: ["libedit","perl"]
   - name: clang
     description: C language family frontend for LLVM
     url: https://clang.llvm.org/