Don't use _ for pr

Contributes to CURA-9365

.github/workflows/conan-recipe-version.yml

@@ -80,7 +80,7 @@ jobs:
                     elif [ "${{ github.event_name == 'pull_request' }}" = "true" ]; then
                       # Event triggered by a pull_request
                       echo ${{ github.repository_owner }} | awk '{print "::set-output name=user::"tolower($0)}'
-                      echo '::set-output channel=pr_${{ github.ref_name }}' | egrep -o '^[^/|_]+'
+                      echo '::set-output channel=pr_${{ github.ref_name }}' | egrep -o '^[^/]+'
                       echo '::set-output version=${{ steps.git-tool.outputs.Major }}.${{ steps.git-tool.outputs.Minor }}.${{ steps.git-tool.outputs.Patch }}-${{ steps.git-tool.outputs.PreReleaseLabel }}+${{ steps.git-tool.outputs.BuildMetaData }}'
                     else
                       # commits on other branches are considered unstable and for development purposes only