Use wildcard for minor Steeltoe version in NuGet references

[bart-vmware]

Fixes #429.
Fixes #381.

[github-actions]

External link checking results

Status	Count
🔍 Total	1878
✅ Successful	933
⏳ Timeouts	0
🔀 Redirected	132
👻 Excluded	810
❓ Unknown	0
🚫 Errors	3
⛔ Unsupported	0

Errors per input

Errors in docs/docs/v2/welcome/prerequisites.md

• [403] https://dotnet.microsoft.com/download | Rejected status code: 403 Forbidden (configurable with "accept" option)

Errors in docs/docs/v3/welcome/prerequisites.md

• [403] https://dotnet.microsoft.com/download | Error (cached)

Errors in docs/docs/v4/welcome/prerequisites.md

• [403] https://dotnet.microsoft.com/download | Error (cached)

Full Github Actions output

[github-actions]

Preview link: https://www-steeltoe-pr-431.azurewebsites.net

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