Add changesets for #4624 (#4635)

.changeset/dull-ghosts-sip.md

@@ -0,0 +1,6 @@
+---
+'openzeppelin-solidity': patch
+---
+
+`AccessManager`, `AccessManaged`, `GovernorTimelockAccess`: Ensure that calldata shorter than 4 bytes is not padded to 4 bytes.
+pr: #4624

.changeset/purple-squids-attend.md

@@ -0,0 +1,6 @@
+---
+'openzeppelin-solidity': patch
+---
+
+`AccessManager`: Use named return parameters in functions that return multiple values.
+pr: #4624