v4.5.5

Release of version 4.5.5:

3600ff6 build: try different keys
4aecfd9 build: chmod
6fba419 build: fix yaml error
1576bd7 build: release to github
086881a build: fix version dependencies
aec6689 build: add snapshot build repo for web3j:core
b551854 Revert "build: remove hardcoded version"
4d76eb2 build: remove hardcoded version
0f0f9e6 build: release using travis
1471e4d build: add release task
60e1d1d build(spotless): implement and fix all spotless issues
527325c build: refactor build and test approach