fix: add check_mode to the checksum task

[santilococo]

This PR adds the check_mode: false in the fetch checksum task.

This is needed because the next task, which parses the checksum list, expects the checksum files to already be downloaded. Without check_mode: false, the task only runs in "simulation" mode and doesn't download the files.

This "bug" was introduced during a refactor: 6209b53

Without check_mode: false:

TASK [prometheus.prometheus._common : Fetch checksum list for prometheus-2.48.1.linux-amd64.tar.gz] ***********************************************************************
skipping: [node]

TASK [prometheus.prometheus._common : Parse checksum list for prometheus-2.48.1.linux-amd64.tar.gz] ***********************************************************************
fatal: [node -> localhost]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'dict object' has no attribute 'content'. 'dict object' has no attribute 'content'\n\nThe error appears to be in '/home/slococo/.local/share/ansible/collections/ansible_collections/prometheus/prometheus/roles/_common/tasks/install.yml': line 95, column 11, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n        - name: \"Parse checksum list for {{ __common_binary_basename }}\"\n          ^ here\nWe could be wrong, but this one looks like it might be an issue with\nmissing quotes. Always quote
template expression brackets when they\nstart a value. For instance:\n\n    with_items:\n      - {{ foo }}\n\nShould be written as:\n\n    with_items:\n      - \"{{ foo }}\"\n"}

With check_mode: false:

TASK [prometheus.prometheus._common : Fetch checksum list for prometheus-2.48.1.linux-amd64.tar.gz] ***********************************************************************
ok: [node -> localhost]

TASK [prometheus.prometheus._common : Parse checksum list for prometheus-2.48.1.linux-amd64.tar.gz] ***********************************************************************
ok: [node -> localhost]

[gardar]

Perhaps check_mode: false should be applied to the whole binary download block?

[santilococo]

Perhaps check_mode: false should be applied to the whole binary download block?

We can do that as well.

[gardar]

Thanks!