Add Ruby 2.7.2

Author: eregon

README.md

@@ -14,16 +14,17 @@ This action currently supports these versions of MRI, JRuby and TruffleRuby:
 
 | Interpreter | Versions |
 | ----------- | -------- |
-| Ruby | 2.1.9, 2.2, 2.3.0 - 2.3.8, 2.4.0 - 2.4.10, 2.5.0 - 2.5.8, 2.6.0 - 2.6.6, 2.7.1, head, debug, mingw, mswin |
+| Ruby | 2.1.9, 2.2, 2.3.0 - 2.3.8, 2.4.0 - 2.4.10, 2.5.0 - 2.5.8, 2.6.0 - 2.6.6, 2.7.2, head, debug, mingw, mswin |
 | JRuby | 9.1.17.0, 9.2.9.0 - 9.2.13.0, head |
 | TruffleRuby | 19.3.0 - 20.2.0, head |
 | Rubinius | 4.14 |
 
 `ruby-debug` is the same as `ruby-head` but with assertions enabled (`-DRUBY_DEBUG=1`).  
 On Windows, `mingw` and `mswin` are `ruby-head` builds using the MSYS2/MinGW and the MSVC toolchains respectively.
 
-Ruby 2.2 resolves to 2.2.6 on Windows (last build from RubyInstaller) and 2.2.10 otherwise.  
-Ruby 2.3 on Windows only has builds for 2.3.0, 2.3.1 and 2.3.3 (same as RubyInstaller).
+Only versions published by [RubyInstaller](https://rubyinstaller.org/downloads/archives/) are available on Windows.
+Due to that, Ruby 2.2 resolves to 2.2.6 on Windows and 2.2.10 on other platforms.
+And Ruby 2.3 on Windows only has builds for 2.3.0, 2.3.1 and 2.3.3.
 
 Note that Ruby ≤ 2.3 and the OpenSSL version it needs (1.0.2) are both end-of-life,
 which means Ruby ≤ 2.3 is unmaintained and considered insecure.

dist/index.js

@@ -7,7 +7,7 @@ export function getVersions(platform) {
       "2.4.0", "2.4.1", "2.4.2", "2.4.3", "2.4.4", "2.4.5", "2.4.6", "2.4.7", "2.4.9", "2.4.10",
       "2.5.0", "2.5.1", "2.5.2", "2.5.3", "2.5.4", "2.5.5", "2.5.6", "2.5.7", "2.5.8",
       "2.6.0", "2.6.1", "2.6.2", "2.6.3", "2.6.4", "2.6.5", "2.6.6",
-      "2.7.0", "2.7.1",
+      "2.7.0", "2.7.1", "2.7.2",
       "head", "debug",
     ],
     "jruby": [