Update Packages.md to reflect current status

• Formatting changes (consistent newlines, headers in the right place)
• Keycloak is now PERMISSIVE mTLS since it is injected
• Gitlab runner inherits STRICT mTLS

Rendered preview https://repo1.dso.mil/platform-one/big-bang/bigbang/-/blob/packages-update/Packages.md

added kinddocs label

assigned to @micah.nagel

marked this merge request as ready

added statusreview label

requested review from @BrandenCobb and @ryan.j.garcia

changed the description

approved this merge request

approved this merge request

merged

mentioned in commit 02bd2ccc