chore(deps): update actions/add-to-project action to v0.6.1

Author: renovate[bot]

.github/workflows/add-issue-to-project.yml

@@ -10,7 +10,7 @@ jobs:
     name: Add issue to project
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/add-to-project@v0.5.0
+      - uses: actions/add-to-project@v0.6.1
         with:
           project-url: https://github.com/orgs/imgix/projects/4
           github-token: ${{ secrets.GH_TOKEN }}

.github/workflows/add-pr-to-project.yml

@@ -10,7 +10,7 @@ jobs:
     name: Add issue to project
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/add-to-project@v0.5.0
+      - uses: actions/add-to-project@v0.6.1
         with:
           project-url: https://github.com/orgs/imgix/projects/4
           github-token: ${{ secrets.GH_TOKEN }}