Attempt to fix the ubuntu 32 bit vendored PCRE build

Use 'apt update' and see what happens

.github/workflows/main.yml

@@ -39,6 +39,7 @@ jobs:
     - uses: actions/checkout@v2
     - name: Install deps
       run: |
+        sudo apt update
         sudo apt install gettext lib32ncurses5-dev python3-pip g++-multilib
         sudo pip3 install pexpect
     - name: cmake