deprecate go < 1.13 and node.js 8 (#2445)

images/macos/provision/core/node.sh

@@ -26,7 +26,7 @@ if is_Less_Catalina; then
   echo Installing App Center CLI...
   npm install -g appcenter-cli@^1.0.0
 else
-  # Install Node.JS 12 for macOS >= 10.15
+  # Install Node.js 14 for macOS >= 10.15
   brew_smart_install "node@14"
   brew link node@14 --force
 

images/macos/toolsets/toolset-10.14.json

@@ -284,7 +284,6 @@
             "platform" : "darwin",
             "arch": "x64",
             "versions": [
-                "8.*",
                 "10.*",
                 "12.*",
                 "14.*"
@@ -296,8 +295,6 @@
             "arch": "x64",
             "platform" : "darwin",
             "versions": [
-                "1.11.*",
-                "1.12.*",
                 "1.13.*",
                 "1.14.*",
                 "1.15.*"

images/macos/toolsets/toolset-10.15.json

@@ -221,7 +221,6 @@
             "platform" : "darwin",
             "arch": "x64",
             "versions": [
-                "8.*",
                 "10.*",
                 "12.*",
                 "14.*"