[skip-changelog] Configure actions/upload-artifact action to upload required hidden files

.github/workflows/manage-prs.yml

@@ -103,7 +103,7 @@
                 --output "${{ steps.configuration.outputs.path }}/{}" \
                 --header "Authorization: token $GITHUB_TOKEN" \
                 --header "Accept: application/vnd.github.v3.{}" \
                 https://api.github.com/repos/${{ github.repository_owner }}/${{ github.event.repository.name }}/pulls/${{ github.event.pull_request.number }}${{ github.event.issue.number }}
             ' \
             ::: \
               ${{ env.DIFF_IDENTIFIER }} \
@@ -111,7 +111,7 @@
 
       - name: Get head SHA of diff
         id: head
         run: echo "::set-output name=head::$(jq -c .head.sha "${{ steps.configuration.outputs.path }}/${{ env.JSON_IDENTIFIER }}")"
 
       - name: Upload diff file to workflow artifact
         uses: actions/upload-artifact@v3
@@ -140,7 +140,7 @@
         id: download-parser
         uses: carlosperate/download-file-action@v2
         with:
           file-url: https://github.com/arduino/library-registry-submission-parser/releases/download/${{ env.SUBMISSION_PARSER_VERSION }}/parser
           location: ${{ runner.temp }}
 
       - name: Download diff
@@ -168,7 +168,7 @@
           # certain workflow fields.
           echo "::set-output name=type::$(echo "$REQUEST" | jq -r -c '.type')"
           echo "::set-output name=error::$(echo "$REQUEST" | jq -r -c '.error')"
           echo "::set-output name=arduinoLintLibraryManagerSetting::$(echo "$REQUEST" | jq -r -c '.arduinoLintLibraryManagerSetting')"
           echo "::set-output name=submissions::$(echo "$REQUEST" | jq -c '.submissions')"
           echo "::set-output name=index-entry::$(echo "$REQUEST" | jq -r -c '.indexEntry')"
           echo "::set-output name=indexer-logs-urls::$(echo "$REQUEST" | jq -r -c '.indexerLogsURLs')"
@@ -340,7 +340,7 @@
           issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
           body: |
             |
             [Arduino Lint](https://github.com/arduino/arduino-lint) has suggestions for possible improvements to ${{ matrix.submission.submissionURL }}:
 
             ```
             ${{ steps.read-lint-report.outputs.text-report }}
@@ -360,7 +360,7 @@
           issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
           body: |
             |
             ${{ env.ERROR_MESSAGE_PREFIX }}[Arduino Lint](https://github.com/arduino/arduino-lint) found errors with ${{ matrix.submission.submissionURL }}:
 
             ```
             ${{ steps.read-lint-report.outputs.text-report }}
@@ -383,6 +383,7 @@
         uses: actions/upload-artifact@v3
         with:
           if-no-files-found: error
+          include-hidden-files: true
           path: ${{ env.FAIL_FLAG_PATH }}
           name: ${{ env.CHECK_SUBMISSIONS_FAIL_FLAG_ARTIFACT }}
 
@@ -488,7 +489,7 @@
           git add --update "$INDEX_SOURCE_FILE_PATH"
           echo \
             -e \
             "Add submission # ${{ github.event.pull_request.number }}${{ github.event.issue.number }}\n\n${{ github.event.repository.html_url }}/pull/${{ github.event.pull_request.number }}${{ github.event.issue.number }}" \
             | \
               git commit \
                 --file -
@@ -532,7 +533,7 @@
           issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
           body: |
             |
             ${{ env.ERROR_MESSAGE_PREFIX }}Your submission meets all requirements. However, the pull request could not be merged.
 
             Please follow this guide to sync your fork:
             https://docs.github.com/github/collaborating-with-pull-requests/working-with-forks/syncing-a-fork