ci: set the pnpm version number explicitly (#1357)

* ci: set the pnpm version number explicitly

pnpm latest version is now v10. We still use v9, and the latest version of pnpm was used in
Dockerfile instead of v9.

* ci: add missing pnpm v9

Dockerfile

@@ -14,7 +14,7 @@ RUN \
   ;; \
   esac
 
-RUN npm install --global pnpm
+RUN npm install --global pnpm@9
 
 COPY package.json pnpm-lock.yaml postinstall-win.js ./
 RUN CYPRESS_INSTALL_BINARY=0 pnpm install --frozen-lockfile
@@ -45,7 +45,7 @@ WORKDIR /app
 
 RUN apk add --no-cache tzdata tini && rm -rf /tmp/*
 
-RUN npm install -g pnpm
+RUN npm install -g pnpm@9
 
 # copy from build image
 COPY --from=BUILD_IMAGE /app ./

Dockerfile.local

@@ -3,7 +3,7 @@ FROM node:22-alpine
 COPY . /app
 WORKDIR /app
 
-Run npm install --global pnpm
+RUN npm install --global pnpm@9
 
 RUN pnpm install