update workflows to use ocaml-dune/setup-dune@v1

Author: sabine

.github/workflows/build_with_dev_preview.yml

@@ -29,7 +29,7 @@ jobs:
         if: runner.os == 'macOS'
 
       - name: Setup Dune Developer Preview
-        uses: ocaml-dune/setup-dune@v0
+        uses: ocaml-dune/setup-dune@v1
 
       - name: Checkout Repo
         uses: actions/checkout@v5

.github/workflows/ci.yml

@@ -33,9 +33,9 @@ jobs:
         if: runner.os == 'macOS'
 
       - name: Setup Dune
-        uses: ocaml-dune/setup-dune@v0
+        uses: ocaml-dune/setup-dune@v1
         with:
-          version: 3.19.1
+          version: 3.20.1
 
       - name: Checkout Repo
         uses: actions/checkout@v5

.github/workflows/debug-ci.yml

@@ -26,9 +26,9 @@ jobs:
         if: runner.os == 'macOS'
 
       - name: Setup Dune
-        uses: ocaml-dune/setup-dune@v0
+        uses: ocaml-dune/setup-dune@v1
         with:
-          version: 3.19.1
+          version: 3.20.1
 
       - name: Checkout Repo
         uses: actions/checkout@v5

.github/workflows/scrape.yml

@@ -20,9 +20,9 @@ jobs:
 
     steps:
       - name: Setup Dune
-        uses: ocaml-dune/setup-dune@v0
+        uses: ocaml-dune/setup-dune@v1
         with:
-          version: 3.19.1
+          version: 3.20.1
 
       - name: Install system dependencies
         run: sudo apt update && sudo apt-get install libev-dev libonig-dev libcurl4-openssl-dev

.github/workflows/scrape_changelog.yml

@@ -20,9 +20,9 @@ jobs:
 
     steps:
       - name: Setup Dune
-        uses: ocaml-dune/setup-dune@v0
+        uses: ocaml-dune/setup-dune@v1
         with:
-          version: 3.19.1
+          version: 3.20.1
 
       - name: Install system dependencies
         run: sudo apt update && sudo apt-get install libev-dev libonig-dev libcurl4-openssl-dev