Update nginxinc/docs-actions action to v1.0.4 (#2508)

| datasource  | package               | from   | to     |
| ----------- | --------------------- | ------ | ------ |
| github-tags | nginxinc/docs-actions | v1.0.3 | v1.0.4 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/docs-build-push.yml

@@ -41,7 +41,7 @@ jobs:
   call-docs-build-push:
     needs: [vars]
     if: ${{ github.event.repository.fork == false && needs.vars.outputs.azure_creds == 'true' }}
-    uses: nginxinc/docs-actions/.github/workflows/docs-build-push.yml@a733e84a262f8d5d885bfc8eac80bc85928da322 # v1.0.3
+    uses: nginxinc/docs-actions/.github/workflows/docs-build-push.yml@d20def4d420028a71f99863011c6de7325c4013e # v1.0.4
     permissions:
       pull-requests: write # needed to write preview url comment to PR
       contents: read