chore: upgrade typescript to 3.9.5

typescript 3.9.5 contains latest bug fixes. Upgrading to latest before
investigating angular#824

Author: Keen Yee Liau

package.json

@@ -110,7 +110,7 @@
     "test:syntaxes": "yarn compile:syntaxes-test && yarn build:syntaxes && jasmine syntaxes/test/driver.js"
   },
   "dependencies": {
-    "typescript": "~3.9.0"
+    "typescript": "^3.9.5"
   },
   "devDependencies": {
     "@types/jasmine": "3.5.11",

yarn.lock

@@ -880,10 +880,10 @@ [email protected]:
     tunnel "0.0.4"
     underscore "1.8.3"
 
-typescript@~3.9.0:
-  version "3.9.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.3.tgz#d3ac8883a97c26139e42df5e93eeece33d610b8a"
-  integrity sha512-D/wqnB2xzNFIcoBG9FG8cXRDjiqSTbG2wd8DMZeQyJlP1vfTkIxH4GKveWaEBYySKIg+USu+E+EDIR47SqnaMQ==
+typescript@^3.9.5:
+  version "3.9.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.5.tgz#586f0dba300cde8be52dd1ac4f7e1009c1b13f36"
+  integrity sha512-hSAifV3k+i6lEoCJ2k6R2Z/rp/H3+8sdmcn5NrS3/3kE7+RyZXm9aqvxWqjEXHAd8b0pShatpcdMTvEdvAJltQ==
 
 uc.micro@^1.0.1, uc.micro@^1.0.5:
   version "1.0.6"