chore(deps): bump rossjrw/pr-preview-action from 1.6.3 to 1.8.1 (#7533)

Bumps [rossjrw/pr-preview-action](https://github.com/rossjrw/pr-preview-action) from 1.6.3 to 1.8.1.
- [Release notes](https://github.com/rossjrw/pr-preview-action/releases)
- [Commits](rossjrw/pr-preview-action@v1.6.3...v1.8.1)

---
updated-dependencies:
- dependency-name: rossjrw/pr-preview-action
  dependency-version: 1.8.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/cost-models-site.yml

@@ -45,7 +45,7 @@ jobs:
 
       - name: Deploy Preview Site
         if: github.event_name == 'pull_request'
-        uses: rossjrw/pr-preview-action@v1.6.3
+        uses: rossjrw/pr-preview-action@v1.8.1
         with:
           source-dir: doc/cost-models
           umbrella-dir: pr-preview/cost-models

.github/workflows/docusaurus-site.yml

@@ -57,7 +57,7 @@ jobs:
 
       - name: Deploy Preview Site 
         if: github.event_name == 'pull_request'
-        uses: rossjrw/pr-preview-action@v1.6.3
+        uses: rossjrw/pr-preview-action@v1.8.1
         with:
           source-dir: doc/docusaurus/build
           umbrella-dir: pr-preview/docs

.github/workflows/papers-and-specs.yml

@@ -58,7 +58,7 @@ jobs:
 
       - name: Publish Preview Papers 
         if: github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch'
-        uses: rossjrw/pr-preview-action@v1.6.3
+        uses: rossjrw/pr-preview-action@v1.8.1
         with:
           source-dir: _resources
           umbrella-dir: pr-preview/resources