build(deps): bump actions/cache from 3 to 4 (#4329)

Author: dependabot[bot]

.github/workflows/documentation.yml

@@ -27,7 +27,7 @@ jobs:
           go-version: ${{ env.GO_VERSION }}
 
       - name: Cache Go modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           # In order:
           # * Module download cache

.github/workflows/pr-documentation.yml

@@ -25,7 +25,7 @@ jobs:
           go-version: ${{ env.GO_VERSION }}
 
       - name: Cache Go modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           # In order:
           # * Module download cache

.github/workflows/pr.yml

@@ -100,7 +100,7 @@ jobs:
           # - 1.18beta1 -> 1.18.0-beta.1
           # - 1.18rc1 -> 1.18.0-rc.1
           go-version: ${{ matrix.golang }}
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ matrix.golang }}-${{ hashFiles('**/go.sum') }}