Merge pull request #159391 from dhartunian/blathers/backport-release-26.1-159282

release-26.1: roachprod: use npm to install pnpm in cypress image

Author: dhartunian

pkg/cmd/roachtest/tests/db-console/Dockerfile

@@ -1,8 +1,6 @@
 FROM cypress/included:13.13.2
 
-RUN apt-get -y update
-RUN apt-get -y install curl
-RUN curl -fsSL https://get.pnpm.io/install.sh | env SHELL=bash PNPM_HOME=/usr/local/bin PNPM_VERSION=8.6.11 sh -
+RUN npm install -g [email protected]
 RUN mkdir /e2e
 COPY . /e2e
 WORKDIR /e2e