Adding libgbm1 among Chromium requirements for Ubuntu

(cherry picked from commit 49d2028)

chapter_5/requirements.rst

@@ -252,7 +252,7 @@ Knowage provides a distribution of Chromium for its functionalities but some oth
         dnf install -y libX11 libX11-xcb libXcomposite libXcursor libXdamage libXext libXi libXtst nss libXScrnSaver libXrandr alsa-lib atk at-spi2-atk pango gtk3 libgbm
 
         # For Debian/Ubuntu
-        apt-get install -y libxss1 libgtk-3-0 libasound2 libatk-bridge2.0-0 libatk1.0-0 libatspi2.0-0 libc6 libcairo2 libcups2 libdbus-1-3 libexpat1 libgcc1 libgdk-pixbuf2.0-0 libglib2.0-0 libnspr4 libnss3 libpango-1.0-0 libpangocairo-1.0-0 libuuid1 libx11-6 libx11-xcb1 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 libxtst6 bash
+        apt-get install -y libgbm1 libxss1 libgtk-3-0 libasound2 libatk-bridge2.0-0 libatk1.0-0 libatspi2.0-0 libc6 libcairo2 libcups2 libdbus-1-3 libexpat1 libgcc1 libgdk-pixbuf2.0-0 libglib2.0-0 libnspr4 libnss3 libpango-1.0-0 libpangocairo-1.0-0 libuuid1 libx11-6 libx11-xcb1 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 libxtst6 bash
 
         # For RedHat 7
         yum install -y pango.x86_64 libXcomposite.x86_64 libXcursor.x86_64 libXdamage.x86_64 libXext.x86_64 libXi.x86_64 libXtst.x86_64 cups-libs.x86_64 libXScrnSaver.x86_64 libXrandr.x86_64 GConf2.x86_64 alsa-lib.x86_64 atk.x86_64 gtk3.x86_64 ipa-gothic-fonts xorg-x11-fonts-100dpi xorg-x11-fonts-75dpi xorg-x11-utils xorg-x11-fonts-cyrillic xorg-x11-fonts-Type1 xorg-x11-fonts-misc