Remove missing unshallow steps

.github/workflows/ci.yml

@@ -29,9 +29,8 @@ jobs:
       -
         name: Checkout
         uses: actions/checkout@v2
-      -
-        name: Unshallow
-        run: git fetch --prune --unshallow
+        with:
+          fetch-depth: 0
       -
         name: Set up Go
         uses: actions/setup-go@v2
@@ -63,9 +62,8 @@ jobs:
       -
         name: Checkout
         uses: actions/checkout@v2
-      -
-        name: Unshallow
-        run: git fetch --prune --unshallow
+        with:
+          fetch-depth: 0
       -
         name: Set up Go
         uses: actions/setup-go@v2

.github/workflows/test.yml

@@ -25,9 +25,8 @@ jobs:
       -
         name: Checkout
         uses: actions/checkout@v2
-      -
-        name: Unshallow
-        run: git fetch --prune --unshallow
+        with:
+          fetch-depth: 0
       -
         name: Install
         run: yarn install

README.md

@@ -60,8 +60,6 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 ```
 
-> **IMPORTANT**: note the `Unshallow` step. It is required for the changelog to work correctly.
-
 ### Run on new tag
 
 If you want to run GoReleaser only on new tag, you can use this event: