chore: add yarn cache to CI

.github/workflows/deploy-wallet-at-pr.yml

@@ -22,6 +22,13 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
+      - name: Restore yarn cache
+        uses: actions/setup-node@v3
+        with:
+          node-version: '18'
+          cache: 'yarn'
+          cache-dependency-path: '**/package-lock.json'
+
       - name: Install dependencies
         run: yarn
 
@@ -34,6 +41,13 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
 
+      - name: Restore yarn cache
+        uses: actions/setup-node@v3
+        with:
+          node-version: '18'
+          cache: 'yarn'
+          cache-dependency-path: '**/package-lock.json'
+
       - name: Install protoc
         run: sudo apt-get install -y protobuf-compiler
 
@@ -72,6 +86,13 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
+      - name: Restore yarn cache
+        uses: actions/setup-node@v3
+        with:
+          node-version: '18'
+          cache: 'yarn'
+          cache-dependency-path: '**/package-lock.json'
+
       - name: Install protoc
         run: sudo apt-get install -y protobuf-compiler
 
@@ -107,6 +128,13 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
+      - name: Restore yarn cache
+        uses: actions/setup-node@v3
+        with:
+          node-version: '18'
+          cache: 'yarn'
+          cache-dependency-path: '**/package-lock.json'
+
       - name: Install protoc
         run: sudo apt-get install -y protobuf-compiler
 
@@ -158,9 +186,14 @@ jobs:
         working-directory: ./apps/namada-interface
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+
+      - name: Restore yarn cache
+        uses: actions/setup-node@v3
         with:
-          node-version: "18.x"
+          node-version: '18'
+          cache: 'yarn'
+          cache-dependency-path: '**/package-lock.json'
+
       - name: Install wasm-pack
         uses: jetli/[email protected]
         with: