Bump r-lib/actions from 2.11.4 to 2.12.0 (#90)

Bumps [r-lib/actions](https://github.com/r-lib/actions) from 2.11.4 to 2.12.0.
- [Release notes](https://github.com/r-lib/actions/releases)
- [Changelog](https://github.com/r-lib/actions/blob/v2-branch/NEWS.md)
- [Commits](r-lib/actions@v2.11.4...v2.12.0)

---
updated-dependencies:
- dependency-name: r-lib/actions
  dependency-version: 2.12.0
  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/docs.yaml

@@ -63,10 +63,10 @@ jobs:
         uses: julia-actions/setup-julia@v2
 
       - name: Install R
-        uses: r-lib/actions/setup-r@v2.11.4
+        uses: r-lib/actions/setup-r@v2.12.0
 
       - name: Install R dependencies
-        uses: r-lib/actions/setup-r-dependencies@v2.11.4
+        uses: r-lib/actions/setup-r-dependencies@v2.12.0
         with:
           packages: |
             any::roxygen2

.github/workflows/main.yml

@@ -144,10 +144,10 @@ jobs:
           submodules: recursive
 
       - name: Install R
-        uses: r-lib/actions/setup-r@v2.11.4
+        uses: r-lib/actions/setup-r@v2.12.0
 
       - name: Install R dependencies
-        uses: r-lib/actions/setup-r-dependencies@v2.11.4
+        uses: r-lib/actions/setup-r-dependencies@v2.12.0
         with:
           packages: |
             any::R6