Release 4.3.0

• Merge pull request #312 from bigchaindb/fet-improve-requests (f9a4675)
• ci: extends wait delay (7a12ee7)
• fix: use abort-controller pkg for node <15 (eee8da4)
• ci: run BCDB node in background (2f3b2db)
• Merge branch 'master' into fet-improve-requests (334a3f4)
• ci: update watched branch (1864f6f)
• ci: create GH workflow (2ffbe99)
• ci: create GH action workflow (ae13da5)
• feat: export extra types (30c15b9)
• fix: improve transaction typedefs (1ba488b)
• feat: update connection typedefs (fbc3d79)
• feat: add limit query for transaction search requests (46599f5)
• feat: ensure timeout and request are properly cleared (8c0c726)
• chore: update dependencies (c5fe134)
• chore: update lint rules (dc353ee)
• fix: improve promises handling (38819a5)
• chore: update wepback config (34289b0)
• chore: update dev dependencies (1f95bec)