Update GitHub Actions

Signed-off-by: Sora Morimoto <[email protected]>

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly

.github/workflows/workflow.yml

@@ -17,19 +17,20 @@ jobs:
           - ubuntu-latest
           - windows-latest
         ocaml-compiler:
-          - 4.08.x
-          - 4.14.x
+          - "4.08"
+          - "4.14"
 
     runs-on: ${{ matrix.os }}
 
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
+      - name: Checkout tree
+        uses: actions/checkout@v4
 
-      - name: Use OCaml ${{ matrix.ocaml-compiler }}
+      - name: Set-up OCaml ${{ matrix.ocaml-compiler }}
         uses: ocaml/setup-ocaml@v2
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
+          allow-prerelease-opam: true
 
       - run: opam install . --deps-only --with-test
 
@@ -40,17 +41,16 @@ jobs:
   lint-doc:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
+      - name: Checkout tree
+        uses: actions/checkout@v4
 
-      - name: Use OCaml 4.14.x
+      - name: Set-up OCaml
         uses: ocaml/setup-ocaml@v2
         with:
-          ocaml-compiler: 4.14.x
-          dune-cache: true
+          ocaml-compiler: "4.14"
+          allow-prerelease-opam: true
 
-      - name: Lint doc
-        uses: ocaml/setup-ocaml/lint-doc@v2
+      - uses: ocaml/setup-ocaml/lint-doc@v2
 
   lint-opam:
     runs-on: ubuntu-latest
@@ -61,8 +61,7 @@ jobs:
       - name: Use OCaml 4.14.x
         uses: ocaml/setup-ocaml@v2
         with:
-          ocaml-compiler: 4.14.x
-          dune-cache: true
+          ocaml-compiler: "4.14"
+          allow-prerelease-opam: true
 
-      - name: Lint opam
-        uses: ocaml/setup-ocaml/lint-opam@v2
+      - uses: ocaml/setup-ocaml/lint-opam@v2