update gha

Author: fonsp

.github/workflows/ExportPluto.yaml

@@ -21,7 +21,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout this repository
-              uses: actions/checkout@v5
+              uses: actions/checkout@v6
 
             - name: Install Julia
               uses: julia-actions/setup-julia@v2

.github/workflows/Test.yml

@@ -29,7 +29,7 @@ jobs:
 
         steps:
             # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-            - uses: actions/checkout@v5
+            - uses: actions/checkout@v6
 
             # Makes the `julia` command available
             - uses: julia-actions/setup-julia@v2