Pgadmin4: 8.3 -> 8.4, jsonformatter init at 0.3.2

[gador]

Description of changes

• Init jsonformatter(https://pypi.org/project/jsonformatter/)
• Update pgadmin4 to 8.4 (https://www.pgadmin.org/docs/pgadmin4/latest/release_notes_8_4.html)

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[risicle]

This addresses CVE-2024-2044

[LeSuisse]

Looks good, tests are passing and I played a bit with pgadmin4-desktopmode with no issue.

Result of nixpkgs-review pr 295860 run on x86_64-linux 1

8 packages built:

• pgadmin4
• pgadmin4-desktopmode
• pgadmin4-desktopmode.dist
• pgadmin4.dist
• python311Packages.jsonformatter
• python311Packages.jsonformatter.dist
• python312Packages.jsonformatter
• python312Packages.jsonformatter.dist

[LeSuisse]

For 23.11 see #296624