bump oldest CI to R 4.1, still test oldest pandoc, add rsrv CI

Author: slager

.github/workflows/R-CMD-check.yaml

@@ -22,7 +22,8 @@ jobs:
           - {os: windows-latest, r: 'release'}
           - {os: ubuntu-latest,   r: 'devel', http-user-agent: 'release'}
           - {os: ubuntu-latest,   r: 'release'}
-          - {os: ubuntu-latest,   r: '4.0.4', pandoc-version: '2.11.4'}
+          - {os: ubuntu-latest,   r: '4.4.2', pandoc-version: '3.2'}
+          - {os: ubuntu-latest,   r: '4.1.0', pandoc-version: '2.11.4'}
 
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
@@ -31,14 +32,14 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup statsrv pandoc
-        if: ${{ matrix.config.r == '4.0.4' }}
+      - name: Setup custom pandoc version
+        if: ${{ matrix.config.pandoc-version != null }}
         uses: r-lib/actions/setup-pandoc@v2
         with:
           pandoc-version: ${{ matrix.config.pandoc-version }}
 
-      - name: Setup default pandoc
-        if: ${{ matrix.config.r != '4.0.4' }}
+      - name: Setup default pandoc version
+        if: ${{ matrix.config.pandoc-version == null }}
         uses: r-lib/actions/setup-pandoc@v2
 
       - name: Set up tinytex
@@ -53,15 +54,15 @@ jobs:
 
       - name: Setup recent R
         uses: r-lib/actions/setup-r@v2
-        if: ${{ matrix.config.r != '4.0.4' }}
+        if: ${{ matrix.config.r != '4.1.0' || matrix.config.r != '4.4.2'}}
         with:
           r-version: ${{ matrix.config.r }}
           http-user-agent: ${{ matrix.config.http-user-agent }}
           use-public-rspm: true
 
-      - name: Setup R 4.0.4
+      - name: Setup older R
         uses: r-lib/actions/setup-r@v2
-        if: ${{ matrix.config.r == '4.0.4' }}
+        if: ${{ matrix.config.r == '4.1.0' || matrix.config.r != '4.4.2'}}
         with:
           r-version: ${{ matrix.config.r }}
           cran: 'https://packagemanager.posit.co/cran/__linux__/noble/2024-04-19'