Update GH Actions versions

.github/workflows/lint.yml

@@ -18,12 +18,12 @@ jobs:
         vips-version: ["8.15"]
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
-      - uses: actions/setup-go@v3
+        uses: actions/checkout@v4
+      - uses: actions/setup-go@v4
         with:
           go-version: ${{ matrix.go-version }}
       - name: Cache mods
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cache/go-build

.github/workflows/test.yml

@@ -18,12 +18,12 @@ jobs:
         vips-version: ["8.15", "8.14", "8.13"]
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
-      - uses: actions/setup-go@v3
+        uses: actions/checkout@v4
+      - uses: actions/setup-go@v4
         with:
           go-version: ${{ matrix.go-version }}
       - name: Cache mods
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ~/.cache/go-build