fix(ts): drop explicit pnpm version in release-ts.yml (#5)

pnpm/action-setup fails with "Multiple versions of pnpm specified" when
both `version:` and package.json's `packageManager:` field are set. Drop
the `version: 9` input so the action reads pnpm@9.14.4 from package.json
(the single source of truth).

Author: dougborg

.github/workflows/release-ts.yml

@@ -25,8 +25,6 @@ jobs:
           fetch-depth: 0
 
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
 
       - uses: actions/setup-node@v5
         with:
@@ -74,8 +72,6 @@ jobs:
           persist-credentials: false
 
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
 
       - uses: actions/setup-node@v5
         with: