Remove 'habr' from category-ru (#3087)

Removed 'include:habr' from the category-ru file.

Reasons:

1) habr.com isn't affiliated with Russia directly (even though the habr.com IS hosted in Russia, it's cdn domain - habrastorage.org is hosted in Estonia)
2) the site itself contains a lot of geoblocked articles which can't be accessed without a foreign proxy - so it being in category-ru can lead to routing mishaps in cases such as routing category-ru sites to DIRECT on the client

.github/workflows/build.yml

@@ -5,6 +5,11 @@ on:
       - master
     paths-ignore:
       - "**/README.md"
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
 jobs:
   build:
     name: Build

data/category-ru

@@ -18,7 +18,6 @@ ru.net
 
 include:category-gov-ru
 
-include:habr
 include:mailru-group
 include:okko
 include:ozon