fix: minimum value required for the basic example

[rajatagarwal-ibm]

Description

update minimum memory specified in the basic example from 1024 to 4096.

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[rajatagarwal-ibm]

/run pipeline

[terraform-ibm-modules-ops]

:tada: This PR is included in version 3.19.4 :tada:

The release is available on:

• GitHub release
• v3.19.4

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