chore: bump SDK_VERSION to 5.4.1

NOTE: This makes 5.4.1 the same as 5.1.38.
* Maven Central doesn't allow unpublishing a version.
A future 5.4.2 release will be made on top of the 5.4.0 base after all
issues have been addressed and tested.

chore: bump SDK_VERSION to 5.4.0 (#2395)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

chore: bump SDK_VERSION to 5.4.0-alpha-03 (#2392)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

chore: bump SDK_VERSION to 5.1.38 (#2390)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

chore: bump SDK_VERSION to 5.4.0-alpha-02 (#2386)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Merge pull request #2373 from OneSignal/rel/5.4.0-alpha-01

Release 5.4.0-alpha-01

Release 5.1.37 (#2355)

Co-authored-by: AR Abdul Azeez <abdul@onesignal.com>

Merge pull request #2350 from OneSignal/rel/5.1.36

Release 5.1.36

Merge pull request #2342 from OneSignal/rel/5.3.0-alpha-01

Release 5.3.0-alpha-01

Merge pull request #2338 from OneSignal/rel/5.2.0-beta-06

Release 5.2.0-beta-06