neuron: create 9.0.a18 to point to #3147 (files.dat sentinel value)

[ferdonline]

neuron: CoreNeuron can read rebalanced files.dat. Use a sentinel value

[github-actions]

There are one or more issues with the title of this PR.
There are one or more issues with the commit message of commit ea244fe.
Commit message:

Create 9.0.a18 to point to spack#3147 (sentinel value)

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The PR title must be compliant. The commit message of your commit must be compliant as well.
Issues:

• The following packages were changed but not mentioned:
  neuron:
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  Alternatively, you can use one line per package to describe the change per package.
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• The following packages were changed but not mentioned:
  neuron:
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[bbpbuildbot]

Thank you for your pull request!

Should you want to clear the PR build directory after failures, please use this pipeline. Before running the cleanup pipeline, please ensure that any PR building pipelines have been cancelled or finished running.

[github-actions]

There are one or more issues with the title of this PR.
There are one or more issues with the commit message of commit 79e1c9a.
Commit message:

        > Create 9.0.a18 to point to nrn#3147 (sentinel value)

neuron: CoreNeuron can read rebalanced files.dat. Use a sentinel value

Please satisfy at least one of the checks (one package, docs, or deploy).
The PR title must be compliant. The commit message of your commit must be compliant as well.
Issues:

• The following packages were changed but not mentioned:
  neuron:
  You can simply use the above list, then explain what you changed.
  Alternatively, you can use one line per package to describe the change per package.
  Please mention at least one package.

• The following packages were changed but not mentioned:
  neuron:
  You can simply use the above list, then explain what you changed.
  Alternatively, you can use one line per package to describe the change per package.
  Please mention at least one package.

[bbpbuildbot]

To test your PR, use the following on BlueBrain5:

unset MODULEPATH
. /gpfs/bbp.cscs.ch/ssd/apps/bsd/pulls/2522/config/modules.sh
module load unstable

Please test the following updated modules:

• neurodamus-hippocampus/2.4.1
• neurodamus-neocortex-multiscale/2.4.1
• neurodamus-neocortex-plasticity/2.4.1
• neurodamus-neocortex/2.4.1
• neurodamus-thalamus/2.4.1
• neuron/9.0.a18
• psp-validation/0.6.0
• py-bbp-workflow/3.1.57
• py-bluecellulab/2.6.15
• py-bluepyemodel/0.0.105
• py-bluepyemodelnexus/0.0.8
• py-bluepymm/0.8.7
• py-bluepyopt/1.14.11
• py-emodel-generalisation/0.2.13
• py-minis-validation/0.0.5.2024-10-11
• py-morph-tool/2.9.1
• py-multiscale-run/0.8.1
• py-region-grower/1.4.0
• py-synthesis-workflow/1.1.0
• py-visual-cortex-analysis/0.2.3

[bbpbuildbot]

To test your PR, use the following on BlueBrain5:

unset MODULEPATH
. /gpfs/bbp.cscs.ch/ssd/apps/bsd/pulls/2522/config/modules.sh
module load unstable

Please test the following updated modules:

• neurodamus-hippocampus/2.4.1
• neurodamus-neocortex-multiscale/2.4.1
• neurodamus-neocortex-plasticity/2.4.1
• neurodamus-neocortex/2.4.1
• neurodamus-thalamus/2.4.1
• neuron/9.0.a18
• psp-validation/0.6.0
• py-bbp-workflow/3.1.57
• py-bluecellulab/2.6.15
• py-bluepyemodel/0.0.105
• py-bluepyemodelnexus/0.0.8
• py-bluepymm/0.8.7
• py-bluepyopt/1.14.11
• py-emodel-generalisation/0.2.13
• py-minis-validation/0.0.5.2024-10-11
• py-morph-tool/2.9.1
• py-multiscale-run/0.8.1
• py-region-grower/1.4.0
• py-synthesis-workflow/1.1.0
• py-visual-cortex-analysis/0.2.3