chore: update to pnpm v9.15.0 #2875

	# Copyright 2024 Google LLC
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
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	# See the License for the specific language governing permissions and
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	name: Build Check (Run npm run build everywhere locally if this fails)

	on: pull_request

	env:
	GITHUB_PULL_REQUEST_HEAD_SHA: ${{ github.event.pull_request.head.sha }}
	GITHUB_PULL_REQUEST_BASE_SHA: ${{ github.event.pull_request.base.sha }}

	jobs:
	build:
	name: Run build tasks
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: pnpm/action-setup@v3
	- name: Set up node v21
	uses: actions/setup-node@v4
	with:
	node-version: 21.x
	cache: 'pnpm'
	- name: Install dependencies
	run: pnpm install
	- name: Run build script
	run: pnpm build
	- name: Run js tests
	run: pnpm test:js
	- name: Validate working directory is clean
	run: .github/workflows/scripts/ensure-clean-working-tree.sh

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