Bump FireMarshal for linux rng init fix

[raghav-g13]

Issue: In the absence of a hardware random number generator, applications are blocked on dev/urandom while the system gains entropy. Gaining entropy unnecessarily consumes lots of sim cycles and applications appear to silently hang.

This PR adds Kconfig options to firesim/linux and uses them in FireMarshal to artificially set entropy during early boot.

Related PRs / Issues:

• firesim/FireMarshal : rng init fix: update firesim/linux submodule + update linux-config to use Kconfig options #289
• firesim/linux : Initialize random number generator in early boot #4

Type of change:

• Bug fix
• New feature
• Other enhancement

Impact:

• RTL change
• Software change (RISC-V software)
• Build system change
• Other

Contributor Checklist:

• Did you set main as the base branch?
• Is this PR's title suitable for inclusion in the changelog and have you added a changelog:<topic> label?
• Did you state the type-of-change/impact?
• Did you delete any extraneous prints/debugging code?
• Did you mark the PR with a changelog: label?
• (If applicable) Did you update the conda .conda-lock.yml file if you updated the conda requirements file?
• (If applicable) Did you add documentation for the feature?
• (If applicable) Did you add a test demonstrating the PR?

• (If applicable) Did you mark the PR as Please Backport?