Switch xlsx package to fix vulnerabilities

[Kedrihan]

Since xlsx package isn't published on npm registry anymore, I suggest to replace it by @e265/xlsx to fix these vulnerabilities :

• Prototype Pollution in sheetJS - GHSA-4r6h-8v6p-xvw6
• SheetJS Regular Expression Denial of Service (ReDoS) - GHSA-5pgg-2g8v-p4x9

As said on the readme of this package, "It automatically takes a fresh version of SheetJS from their git repository, and publishes to npm if the version is different. The whole process is automated and works through Github Actions."

[ChronosMasterOfAllTime]

@Kedrihan As a temporary workaround you can add the following in your package.json:

"overrides": {
  "dependency": {
    "vue3-excel-editor": {
        "xlsx": "npm:@e965/xlsx@^0.20.3",
    }
  }
}