try and fix travis?

Author: Geoff MacDonald

.travis.yml

@@ -1,11 +1,11 @@
 language: objective-c
-rvm: 2.3
+rvm: 2.7.3
 # https://docs.travis-ci.com/user/reference/osx
-osx_image: xcode10.2
+osx_image: xcode12.2
 env:
   global:
-    - IOS_SIMULATOR="iPhone XS"
-    - IOS_VERSION="12.2"
+    - IOS_SIMULATOR="iPhone 11"
+    - IOS_VERSION="14.2"
 matrix:
   include:
     - env: BUILD_SCHEME="SQLite iOS"
@@ -25,7 +25,4 @@ before_install:
   - brew update
   - brew outdated carthage || brew upgrade carthage
 script:
-# Workaround for Xcode 10.2/tvOS 9.1 bug
-# See https://stackoverflow.com/questions/55389080/xcode-10-2-failed-to-run-app-on-simulator-with-ios-10
-  - sudo mkdir /Library/Developer/CoreSimulator/Profiles/Runtimes/tvOS\ 9.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/swift
   - ./run-tests.sh