Install pnpm via action

Author: trashpanda001

.github/workflows/docs.yaml

@@ -9,6 +9,7 @@ jobs:
       - run: |
           NODE_VERSION=$(awk -F'"' '/node =/ {print $2}' .mise.toml)
           echo "NODE_VERSION=$NODE_VERSION" >> $GITHUB_ENV
+      - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
           cache: "pnpm"

.github/workflows/publish.yaml

@@ -15,6 +15,7 @@ jobs:
       - run: |
           NODE_VERSION=$(awk -F'"' '/node =/ {print $2}' .mise.toml)
           echo "NODE_VERSION=$NODE_VERSION" >> $GITHUB_ENV
+      - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
           cache: "pnpm"

.github/workflows/test.yaml

@@ -14,6 +14,7 @@ jobs:
       - run: |
           NODE_VERSION=$(awk -F'"' '/node =/ {print $2}' .mise.toml)
           echo "NODE_VERSION=$NODE_VERSION" >> $GITHUB_ENV
+      - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
           cache: "pnpm"