Enhance i18n:check task (#1578)

i18n:check task used to verify only if the source en.po file was up to
date. The new process instead verifies that all translations are up to
date by downloading them directly from Transifex.

The previous process was causing some issues since after uploading the
en.po file Transifex would change its formatting, meaning when calling
i18n:pull we would download a file containing the same information but
formatted in a different way and that made the i18n:check command fail.

By making the i18n:check task call i18n:pull instead of i18n:update we
don't have issues with the formatting anymore.

This change also covers a corner-case that would occur when the
en.po file wasn't updated since a long time, the i18n:check wouldn't
fail because the en.po was the same as before but that wouldn't mean
that the translations were up to date with the latest from Transifex.

Author: silvanocerza

Diff for: .github/workflows/check-i18n-task.yml

@@ -32,5 +32,9 @@ jobs:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           version: 3.x
 
-      - name: Check i18n source file is up to date
+      - name: Check i18n source and translation files are up to date
         run: task i18n:check
+        env:
+          TRANSIFEX_PROJECT: ${{ secrets.TRANSIFEX_PROJECT }}
+          TRANSIFEX_RESOURCE: ${{ secrets.TRANSIFEX_RESOURCE }}
+          TRANSIFEX_API_KEY: ${{ secrets.TRANSIFEX_API_KEY }}

Diff for: Taskfile.yml

@@ -266,7 +266,6 @@ tasks:
     cmds:
       - task: go:vet
       - task: go:lint
-      - task: i18n:check
       - task: python:lint
       - task: protoc:check
 
@@ -299,7 +298,7 @@ tasks:
   i18n:check:
     desc: Check if the i18n message catalog was updated
     cmds:
-      - task: i18n:update
+      - task: i18n:pull
       - git add -N ./i18n/data
       - git diff --exit-code ./i18n/data