Add blog post on hardening the Collector

[mx-psi]

Adds new blog post in relation to open-telemetry/opentelemetry-collector/pull/10352 and open-telemetry/opentelemetry-collector-contrib/pull/33658.

Docs PR Checklist

• This PR is for a documentation page whose authoritative copy is in the
  opentelemetry.io repository.

[svrnm]

@mx-psi can you create an issue for this (you can keep the PR in draft) following these updated guidelines: https://opentelemetry.io/docs/contributing/blog/#before-submitting-a-blog-post ?

Thanks!

[mx-psi]

@mx-psi can you create an issue for this (you can keep the PR in draft) following these updated guidelines: opentelemetry.io/docs/contributing/blog/#before-submitting-a-blog-post ?

Thanks!

@svrnm Sure! See #4760

[mx-psi]

@svrnm if you don't mind helping here, since the publishing date is set to July 2nd I can't preview the contents. Any suggestions here? Maybe I can change the date temporarily to help people review this?

[theletterf]

Good stuff! Can you perhaps end with a note on what to expect in Episode 2?

[svrnm]

Blocking this until July 2nd when we want to merge it

@mx-psi let me know if you want to have it published earlier (e.g. today) then I will unblock it and merge it

[mx-psi]

Thanks @svrnm! I would like to merge it once we have v0.104.0 ready, which would be Monday/Tuesday next week. I will let you know if it happens at a different date

[TylerHelmuth]

@open-telemetry/docs-maintainers the release is complete and this is ready to be merged.

[theletterf]

Merged. Thanks all!