Rollup merge of rust-lang#87130 - GuillaumeGomez:update-browser-ui-te…

…st, r=Mark-Simulacrum

Update browser-ui-test package version

It adds a check to prevent to have empty CSS values in `assert-css` command.

r? `@Mark-Simulacrum`

src/ci/docker/host-x86_64/x86_64-gnu-tools/Dockerfile

@@ -72,7 +72,7 @@ ENV PATH="/node-v14.4.0-linux-x64/bin:${PATH}"
 # https://github.com/puppeteer/puppeteer/issues/375
 #
 # We also specify the version in case we need to update it to go around cache limitations.
-RUN npm install -g [email protected].1 --unsafe-perm=true
+RUN npm install -g [email protected].2 --unsafe-perm=true
 
 ENV RUST_CONFIGURE_ARGS \
   --build=x86_64-unknown-linux-gnu \