Bref v3

[mnapoli]

This PR will contain all changes for Bref v3.

This PR goes hand-in-hand with https://github.com/brefphp/bref/pull/1953

This will be a long-running PR, I like to keep this open for months so that we have a place to preview and discuss changes. I do not intend to merge this pull request soon.

Layers for v3 are published to a different AWS account than v2, to avoid conflict. That means we can start using v3 layers as soon as these are published (working on it).

Changes:

• #122
• #258
• #256
• #259
• #282
• #262
  • disable the soap extension by default to avoid loading it on PHP startup
  • bundle the pdo-mysql extension in the PHP binary and enable it by default
• Publish v3 layers to a separate AWS account (873528684822)
• Drop the blackfire extension from "dev" container images
• #284
• https://github.com/brefphp/bref/pull/2012

---

Layer sizes

PHP 8.4

• v2: 69MB
  • PHP binary: 22MB × 2
  • libs: no libicu
• v3: 53MB
  • PHP binary: 20MB × 2
  • libs: no libicu
• v3 AL2023: 79MB
  • PHP binary: 20MB × 2
  • libs: libicu 32MB

PHP 8.3

• v2: 65MB
  • PHP binary: 18MB × 2
  • libs: no libicu
• v3: 46MB
  • PHP binary: 16MB × 2
  • libs: no libicu
• v3 AL2023: 72MB
  • PHP binary: 16MB × 2
  • libs: libicu 32MB