ci(github): dplyr missingpackage error on pkgdown

Refs #15

.github/workflows/pkgdown.yaml

+# Workflow derived from https://github.com/r-lib/actions/tree/master/examples
+# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
 on:
   push:
-    branches:
-      - main
-      - master
-    tags:
-      -'*'
+    branches: [main, master]
+  release:
+    types: [published]
+  workflow_dispatch:
 
 name: pkgdown
 
 jobs:
   pkgdown:
-    runs-on: macOS-latest
+    runs-on: ubuntu-latest
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
     steps:
       - uses: actions/checkout@v2
 
-      - uses: r-lib/actions/setup-r@v1
-
       - uses: r-lib/actions/setup-pandoc@v1
 
-      - name: Query dependencies
-        run: |
-          install.packages('remotes')
-          saveRDS(remotes::dev_package_deps(dependencies = TRUE), ".github/depends.Rds", version = 2)
-          writeLines(sprintf("R-%i.%i", getRversion()$major, getRversion()$minor), ".github/R-version")
-        shell: Rscript {0}
-
-      - name: Restore R package cache
-        uses: actions/cache@v2
+      - uses: r-lib/actions/setup-r@v1
         with:
-          path: ${{ env.R_LIBS_USER }}
-          key: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-${{ hashFiles('.github/depends.Rds') }}
-          restore-keys: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-
-
-      - name: Install dependencies
-        run: |
-          remotes::install_deps(dependencies = TRUE)
-          install.packages("pkgdown", type = "binary")
-        shell: Rscript {0}
+          use-public-rspm: true
 
-      - name: Install package
-        run: R CMD INSTALL .
+      - uses: r-lib/actions/setup-r-dependencies@v1
+        with:
+          extra-packages: pkgdown
+          needs: website
 
       - name: Deploy package
         run: |
-          git config --local user.email "actions@github.com"
-          git config --local user.name "GitHub Actions"
+          git config --local user.name "$GITHUB_ACTOR"
+          git config --local user.email "$GITHUB_ACTOR@users.noreply.github.com"
           Rscript -e 'pkgdown::deploy_to_branch(new_process = FALSE)'