fix: add 'version' input to GitHub action (#82)

* fix: add 'version' input to GitHub action

This allows specifying a GitHub action version independent from the
conformance test (client) version and fixes the issue where conformance tests are being
updated even when specifying an older Action release.

Note, that GitHub Actions recommends placing the Action in a separate
repo, so it may be worth moving `/actions` into its own repo at some
point: https://docs.github.com/en/actions/creating-actions/about-custom-actions#choosing-a-location-for-your-action

Author: anniefu

action/README.md

@@ -3,10 +3,14 @@
 This action runs the Functions Framework conformance tests with the specified
 parameters.
 
-Requires Go to be installed prior to running (e.g. actions/setup-go).
+Requires Go 1.16+ to be installed prior to running (e.g. actions/setup-go).
 
 ## Inputs
 
+### `version`
+
+The version of conformance tests to run. Default `latest`.
+
 ### `cmd`
 
 The command to be run.
@@ -27,6 +31,7 @@ Whether or not to validate legacy->cloudevent mapping and vice versa. Default
 uses: actions/setup-go@v1
 uses: GoogleCloudPlatform/functions-framework-conformance/actions@v1
 with:
+  version: 'v1.0.0'
   functionType: 'http'
   validateMapping: false
   source: 'testdata/testfunc.go'

action/action.yml

@@ -1,8 +1,11 @@
 name: 'Run conformance tests'
 description: 'Run the functions framework conformance tests with specified parameters.'
 inputs:
+  version:
+    description: 'version of the conformance tests to run'
+    default: 'latest'
   outputFile:
-    description: 'output file from funciton'
+    description: 'output file from function'
     default: 'function_output.json'
   functionType:
     description: 'type of function'