use new 'min' option to capture minimum supported julia version in CI (#782)

Author: palday

.github/workflows/documenter.yml

@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
         with:
-          version: 1.8
+          version: 'min'
       - uses: julia-actions/cache@v2
         with:
             cache-compiled: "true"

.github/workflows/minimum.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        julia-version: [1.8]
+        julia-version: [min]
         julia-arch: [x64]
         os: [ubuntu-22.04, macos-12, windows-2019]
     steps: