Firebase Admin Node.js SDK v12.3.1

Bug Fixes

• fix: getToken() returns existing promise to a token if one exists instead of a new token. (#2648)

Miscellaneous

• [chore] Release 12.3.1 (#2667)
• chore: Skip sendToDeviceGroup integration test (#2666)
• build(deps-dev): bump @microsoft/api-extractor from 7.47.2 to 7.47.5 (#2661)
• build(deps): bump @types/node from 22.0.1 to 22.1.0 (#2663)
• build(deps-dev): bump @firebase/app-compat from 0.2.37 to 0.2.38 (#2664)
• build(deps): bump @types/node from 20.14.11 to 22.0.1 (#2657)
• build(deps-dev): bump chai from 4.4.1 to 4.5.0 (#2650)
• build(deps-dev): bump @firebase/app-compat from 0.2.35 to 0.2.37 (#2653)
• build(deps): bump fast-xml-parser from 4.4.0 to 4.4.1 (#2654)