Preserve SemVer for NVM updates

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🎟️ Tracking

Internal change. See bitwarden/contributing-docs#371.

📔 Objective

NVM updates will currently obey :pinAllExceptPeerDependencies given our setup here and its use in Node-oriented repos. To avoid unnecessary upkeep, we can tell Renovate to preserve semantic versioning so this will just end up as v20 for example.

We considered setting global rules on maximum versions for Node and NPM generally, but this should be inside the repos' package.json engines configurations e.g. https://github.com/bitwarden/clients/blob/main/package.json#L226-L229.

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

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⛏️ Found an errant newline.

[Hinton]

Should we lock it down to 20? We don't want to upgrade to other versions atm.

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I mentioned this in the description -- Renovate wants engines driving this and the constraints aren't recommended by them. I think we can allow certain projects to upgrade more aggressively too and we have some teams willing to manage that themselves.