Remove yarn cache from setup-node to avoid corepack trigger

The setup-node action with cache: 'yarn' calls yarn --version to detect
the version for caching, which triggers the bundled corepack BEFORE we
can install yarn via npm. This causes the URL.canParse error.

Solution: Remove cache property from all setup-node steps in both workflows.
Yarn will be installed fresh in each job via npm install -g yarn@4.12.0.

Changes:
- Remove cache: 'yarn' from all setup-node steps
- Remove lingering 'corepack enable' from install jobs
- All jobs now: setup-node -> install yarn -> yarn install

Author: danieltruong

.github/workflows/deploy-to-dev.yaml

@@ -36,14 +36,14 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Enable Corepack
-        run: corepack enable
-
       - name: Setup node
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          cache: "yarn"
+
+      - name: Install Yarn
+        run: npm install -g yarn@4.12.0
+
       - run: yarn install --immutable
 
   lint:
@@ -61,7 +61,6 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          cache: "yarn"
 
       - name: Install Yarn
         run: npm install -g yarn@4.12.0
@@ -87,7 +86,6 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          cache: "yarn"
 
       - name: Install Yarn
         run: npm install -g yarn@4.12.0
@@ -110,7 +108,6 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          cache: "yarn"
 
       - name: Install Yarn
         run: npm install -g yarn@4.12.0

.github/workflows/pr.yaml

@@ -17,14 +17,14 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Enable Corepack
-        run: corepack enable
-
       - name: Setup node
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          cache: "yarn"
+
+      - name: Install Yarn
+        run: npm install -g yarn@4.12.0
+
       - run: yarn install --immutable
 
   lint:
@@ -42,7 +42,6 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          cache: "yarn"
 
       - name: Install Yarn
         run: npm install -g yarn@4.12.0
@@ -65,7 +64,6 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          cache: "yarn"
 
       - name: Install Yarn
         run: npm install -g yarn@4.12.0
@@ -88,7 +86,6 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-          cache: "yarn"
 
       - name: Install Yarn
         run: npm install -g yarn@4.12.0