chore: Bump minimal version to 1.26, fix typescript 3.2, npx and typescript version (#435)

Author: Yanpas

.appveyor.yml

@@ -6,7 +6,7 @@ environment:
   VSCODE_BUILD_VERBOSE: true
 
   matrix:
-    # - CODE_VERSION: "1.20.0" # Minimal Version
+    # - CODE_VERSION: "1.26.0" # Minimal Version
     - CODE_VERSION: "*" # Last Stable Version
     # - CODE_VERSION: "insiders" # Insider Version
 

.travis.yml

@@ -8,7 +8,7 @@ os:
   - osx
 
 env:
-  - CODE_VERSION=1.20.0 # Minimal Version
+  - CODE_VERSION=1.26.0 # Minimal Version
   - CODE_VERSION=* # Last Stable Version
   - CODE_VERSION=insiders # Insider Version