ci(.github/workflows): simplify 'pnpm install' command (#1463)

# Overview

* In CI `pnpm install` means `pnpm install --frozen-lockfile`, so i
simplify it.
*
https://github.com/actions/setup-node/blob/main/docs/advanced-usage.md#caching-packages-data



## PR Checklist

- [x] I did below actions if need

1. I read the [Contributing
Guide](https://github.com/toss/suspensive/blob/main/CONTRIBUTING.md)
2. I added documents and tests.

.github/workflows/broken-link-checker.yml

@@ -11,5 +11,5 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/pnpm-setup-node
-      - run: pnpm install --frozen-lockfile
+      - run: pnpm install
       - run: pnpm blc:suspensive.org

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/pnpm-setup-node
-      - run: pnpm install --frozen-lockfile
+      - run: pnpm install
       - if: matrix.command == 'ci:test'
         run: pnpm playwright install
       - run: pnpm ${{ matrix.command }}

.github/workflows/graph.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Setup Pages
         uses: actions/configure-pages@v3
       - name: Install dependencies
-        run: pnpm install --frozen-lockfile
+        run: pnpm install
       - name: Build with Turbo graph
         run: pnpm graph
       - name: Upload artifact

.github/workflows/knip.yml

@@ -18,5 +18,5 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/pnpm-setup-node
-      - run: pnpm install --frozen-lockfile
+      - run: pnpm install
       - run: pnpm ci:knip

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/pnpm-setup-node
-      - run: pnpm install --frozen-lockfile
+      - run: pnpm install
       - run: |
           git config --global user.name "Jonghyeon Ko"
           git config --global user.email "jonghyeon@toss.im"