[wip] try to work around withr issue

setup-r-dependencies is failing with

 '/tmp/[..]/src/contrib/x86_64-pc-linux-gnu-ubuntu-20.04/4.1/withr_3.0.0.tar.gz'
  is not a valid binary, it is missing withr/Meta/package.rds.

Clearing caches didn't resolve the issue.

Try to force source install.

.github/workflows/coverage.yml

@@ -23,6 +23,7 @@ jobs:
           extra-packages: |
             any::covr
             github::metrumresearchgroup/nmrec@0.3.0
+            github::r-lib/withr@v3.0.0
           upgrade: 'TRUE'
       - name: Run covr
         run: covr::codecov()

.github/workflows/main.yaml

@@ -66,6 +66,7 @@ jobs:
             any::pkgdown
             any::rcmdcheck
             ${{ env.NMREC_PKG }}
+            ${{ matrix.config.label != 'oldest' && github::r-lib/withr@v3.0.0}}
           upgrade: ${{ matrix.config.label == 'oldest' && 'FALSE' || 'TRUE' }}
       - uses: r-lib/actions/check-r-package@v2
       - name: Check pkgdown
@@ -90,6 +91,7 @@ jobs:
           extra-packages: |
             any::pkgpub
             ${{ env.NMREC_PKG }}
+            github::r-lib/withr@v3.0.0
       - name: Configure Git
         run: |
           git config --global user.email CI