Tweak package installation action.

Author: vsajip

.github/workflows/test.yml

@@ -36,9 +36,8 @@ jobs:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
       - name: Ensure PCRE available
         if: ${{ matrix.os == 'ubuntu-latest' }}
-        uses: ConorMacBride/install-package@v1
-        with:
-          apt: 'libpcre3-dev'
+        run: |
+          sudo apt update && sudo apt install libpcre3-dev
       - name: Run tests on POSIX
         if: ${{ matrix.os != 'windows-latest' }}
         run: |