Add procps-ng as RPM dependency to fix pxf stop command

[tuhaihe]

The pxf script uses the 'ps' command in the isRunning() function to check if the PXF process is running. However, minimal container images like Rocky Linux 9 do not include the 'ps' command by default.

This causes the 'pxf stop' command to fail with:
/usr/local/cloudberry-pxf/bin/pxf: line 162: ps: command not found

Add explicit package dependencies to ensure the 'ps' command is available when PXF is installed:

• RPM packages: procps-ng
• DEB packages: procps

The 'ps' command is used in:

• server/pxf-service/src/scripts/pxf:162 (isRunning function)

closes: #ISSUE_Number

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[tuhaihe]

Hi @MisterRaindrop @ostinru PTAL. Thanks!