[NFR]: Enable `jpeg` support in GD in CI (when ready)

[Jeckerson]

Some of our tests require jpeg support and currently it is not possible to install PHP inside Ubuntu with this option.

Wait until next version of shivammathur/setup-php action to integrate this feature inside our CI.

Potential syntax to achieve that (https://github.com/shivammathur/test-setup-php/actions/runs/768848306/workflow):

env:
          GD_CONFIGURE_OPTS: --enable-gd=shared,/usr --with-external-gd --with-jpeg
          GD_LIBS: libgd-dev libjpeg-dev
          GD_PATH: ext/gd

Refs:

• Is it possible to install `GD` with `jpeg` support? shivammathur/setup-php#445
• Improve support to install extensions from source. shivammathur/setup-php#418

[Jeckerson]

Related #15418

[niden]

Example: in our local docker environments we had to use this line:

RUN docker-php-ext-configure gd --with-freetype --with-jpeg=/usr/include/ --enable-gd

Note the parameters.

[Jeckerson]

shivammathur/setup-php@v2 is now capable to compile with specific flags.

Refs: shivammathur/setup-php#445 (reply in thread)

[Jeckerson]

Implemented.