Update pnpm/action-setup action to v6

Author: renovate[bot]

.github/workflows/publish.yml

@@ -58,7 +58,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       # Install pnpm (reads version from packageManager field in package.json)
-      - uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v5
+      - uses: pnpm/action-setup@903f9c1a6ebcba6cf41d87230be49611ac97822e # v6
 
       # First setup-node: used for building (keeps the monorepo on its expected Node version)
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
     name: Node ${{ matrix.node }}
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
-      - uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v5
+      - uses: pnpm/action-setup@903f9c1a6ebcba6cf41d87230be49611ac97822e # v6
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
         with:
           node-version: ${{ matrix.node }}