message: upgrade macos builders to macos 11.0
diff: @@ -789,9 +789,9 @@ buildvariants:
  distros:
  - ubuntu2004-arm64-large
  -- name: macos-1015
  - display_name: "MacOS 10.15 x86_64"
  - run_on: macos-1015
  +- name: macos
  + display_name: "MacOS 11.0 x86_64"
  + run_on: macos-1100
  expansions:
  cmake_url: "https://s3.amazonaws.com/static.realm.io/evergreen-assets/cmake-3.20.3-macos-universal.tar.gz"
  cmake_bindir: "./cmake_binaries/CMake.app/Contents/bin"
  @@ -805,9 +805,9 @@ buildvariants:
  - name: compile_test
  - name: swift-build-and-test
  -- name: macos-1015-encrypted
  - display_name: "MacOS 10.15 x86_64 (Encryption enabled)"
  - run_on: macos-1015
  +- name: macos-encrypted
  + display_name: "MacOS 11.0 x86_64 (Encryption enabled)"
  + run_on: macos-1100
  expansions:
  cmake_url: "https://s3.amazonaws.com/static.realm.io/evergreen-assets/cmake-3.20.3-macos-universal.tar.gz"
  cmake_bindir: "./cmake_binaries/CMake.app/Contents/bin"
  @@ -821,9 +821,9 @@ buildvariants:
  tasks:
  - name: compile_core_tests
  -- name: macos-1015-release
  - display_name: "MacOS 10.15 x86_64 (Release build)"
  - run_on: macos-1015
  +- name: macos-release
  + display_name: "MacOS 11.0 x86_64 (Release build)"
  + run_on: macos-1100
  expansions:
  cmake_url: "https://s3.amazonaws.com/static.realm.io/evergreen-assets/cmake-3.20.3-macos-universal.tar.gz"
  cmake_bindir: "./cmake_binaries/CMake.app/Contents/bin"
  