[CI] Install dependabot, update setup-julia, test Julia v1.11 (#7)

Author: giordano

.github/dependabot.yml

@@ -0,0 +1,7 @@
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"

.github/workflows/UnitTests.yml

@@ -19,20 +19,21 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os:
-          - macos-latest
-          - ubuntu-latest
-          - windows-latest
         julia_version:
+          - "~1.11.0-0"
           - "nightly"
         julia_arch:
           - x64
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
 
     runs-on: ${{ matrix.os }}
 
     steps:
     - uses: actions/checkout@v4
-    - uses: julia-actions/setup-julia@v1
+    - uses: julia-actions/setup-julia@v2
       with:
         arch: ${{ matrix.julia_arch }}
         version: ${{ matrix.julia_version }}