build(deps): define mui/base version (#513)

Co-authored-by: Jacopo Carlini <jacopo.carlini@gmail.com>

package.json

@@ -29,6 +29,7 @@
     "generate:api-portal": "wget https://raw.githubusercontent.com/pagopa/pagopa-selfcare-ms-backoffice-backend/main/openapi/openapi.json -O ./openApi/portal-api-docs.json && jq 'walk(if type == \"object\" and has(\"parameters\") then .parameters |= map(select(.name != \"X-Request-Id\")) else . end)' ./openApi/portal-api-docs.json > ./openApi/portal-api-docs.json.temp && mv ./openApi/portal-api-docs.json.temp ./openApi/portal-api-docs.json && yarn run clean:api-portal && mkdirp openApi/generated && api-spec-converter --from=openapi_3 --to=swagger_2 openApi/portal-api-docs.json > openApi/generated/portal-swagger20.json && node openApi/scripts/api-portal_fixPreGen.js && node ./node_modules/@pagopa/selfcare-common-frontend/utils/fixSwagger20ArraySchemaDef.js openApi/generated/portal-swagger20.json && gen-api-models --api-spec openApi/generated/portal-swagger20.json --out-dir src/api/generated/portal --no-strict --request-types --response-decoders --client && node openApi/scripts/api-portal_fixPostGen.js"
   },
   "dependencies": {
+    "@mui/base": "5.0.0-alpha.79",
     "@mui/icons-material": "^5.15.9",
     "@mui/lab": "^5.0.0-alpha.80",
     "@mui/material": "^5.8.2",