Upgrade example esy.jsons to use Dream alpha 5

[Anton Bachin]

Starting with the first one here:

dream/example/1-hello/esy.json

Lines 1 to 18 in fcc618d

 { 
   "dependencies": { 
     "@opam/conf-libssl": "3", 
     "@opam/dream": "1.0.0~alpha4", 
     "@opam/dune": "^2.0", 
     "ocaml": "4.12.x" 
   }, 
   "devDependencies": { 
     "@opam/ocaml-lsp-server": "*" 
   }, 
   "resolutions": { 
     "@opam/conf-libev": "esy-packages/libev:package.json#0b5eb6685b688649045aceac55dc559f6f21b829", 
     "esy-openssl": "esy-packages/esy-openssl#619ae2d46ca981ec26ab3287487ad98b157a01d1" 
   }, 
   "scripts": { 
     "start": "dune exec --root . ./hello.exe" 
   } 
 }