chore: update node version comment in dockerfile (#20496)

utils/docker/Dockerfile.focal

@@ -7,7 +7,7 @@ ARG DOCKER_IMAGE_NAME_TEMPLATE="mcr.microsoft.com/playwright:v%version%-focal"
 # === INSTALL Node.js ===
 
 RUN apt-get update && \
-    # Install node16
+    # Install Node 18
     apt-get install -y curl wget gpg && \
     curl -sL https://deb.nodesource.com/setup_18.x | bash - && \
     apt-get install -y nodejs && \

utils/docker/Dockerfile.jammy

@@ -7,7 +7,7 @@ ARG DOCKER_IMAGE_NAME_TEMPLATE="mcr.microsoft.com/playwright:v%version%-jammy"
 # === INSTALL Node.js ===
 
 RUN apt-get update && \
-    # Install node16
+    # Install Node 18
     apt-get install -y curl wget gpg && \
     curl -sL https://deb.nodesource.com/setup_18.x | bash - && \
     apt-get install -y nodejs && \

utils/docker/Dockerfile.vrt

@@ -7,7 +7,7 @@ ARG DOCKER_IMAGE_NAME_TEMPLATE="mcr.microsoft.com/playwright:v%version%-vrt"
 # === INSTALL Node.js ===
 
 RUN apt-get update && \
-    # Install node16
+    # Install Node 18
     apt-get install -y curl wget gpg && \
     curl -sL https://deb.nodesource.com/setup_18.x | bash - && \
     apt-get install -y nodejs && \