Update CHANGELOG.md for 1.6.3 Release
This changelog follows the format defined here: https://keepachangelog.com/en/1.0.0/
+## [1.6.3] - 2022-04-06
+
+FireSim bump for various fixes. Revert shallow cloning. Various CI fixes.
+
+### Fixed
+* Bump to FireSim 1.13.4 (changelog: https://github.com/firesim/firesim/blob/1.13.4/CHANGELOG.md#1134---2022-04-06)
+* Revert shallow cloning.
+* Various CI fixes.
+
## [1.6.2] - 2022-03-01
Minor fixes to FireSim.
@@ -9,7 +18,6 @@ Minor fixes to FireSim.
### Fixed
* Bump to FireSim 1.13.3 (#1134)
-
## [1.6.1] - 2022-03-01
Minor fixes to FireSim.
