Update pnpm/action-setup action to v2.4.0

Author: renovate[bot]

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: pnpm/action-setup@v2.2.4
+      - uses: pnpm/action-setup@v2.4.0
         with:
           version: 6
       - uses: actions/setup-node@v2

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: pnpm/action-setup@v2.2.4
+      - uses: pnpm/action-setup@v2.4.0
         with:
           version: 6
       - uses: actions/setup-node@v2