build: upgrade to Yarn v4 (#149)

.github/workflows/docs.yml

@@ -19,7 +19,7 @@ jobs:
         with:
           node-version-file: '.nvmrc'
       - name: Install dependencies
-        run: yarn --frozen-lockfile
+        run: yarn --immutable
       - name: Build API documentation
         run: yarn build:docs
       - name: Azure login

.github/workflows/release.yml

@@ -27,7 +27,7 @@ jobs:
           node-version-file: '.nvmrc'
           cache: 'yarn'
       - name: Install
-        run: yarn install --frozen-lockfile
+        run: yarn install --immutable
       - uses: continuousauth/action@4e8a2573eeb706f6d7300d6a9f3ca6322740b72d # v1.0.5
         timeout-minutes: 60
         with:

.github/workflows/test.yml

@@ -29,7 +29,7 @@ jobs:
           node-version: "${{ matrix.node-version }}"
           cache: 'yarn'
       - name: Install
-        run: yarn install --frozen-lockfile
+        run: yarn install --immutable
       - name: Build
         run: yarn build
       - name: Lint