Bump version to v1.6.2

Allow incomplete features in frozen-abi (solana-labs#16204)

(cherry picked from commit 9ba9d2a)

Co-authored-by: Trent Nelson <[email protected]>

Make getStakeActivation response consistent for undelegated accounts (s…

…olana-labs#16039)

Add --slots-per-epoch argument

(cherry picked from commit 04c99cf)

nit: fix spelling (solana-labs#15908) (solana-labs#15910)

(cherry picked from commit 5760cf0)

Co-authored-by: Jack May <[email protected]>

Fix delinquent stake display (solana-labs#15839)

(cherry picked from commit eab1821)

Co-authored-by: Michael Vines <[email protected]>

Remove old feature: cumulative_rent_related_fixes (bp solana-labs#15754…

…) (solana-labs#15757)

* Remove old feature: cumulative_rent_related_fixes (solana-labs#15754)

(cherry picked from commit 8b0c6db)

# Conflicts:
#	runtime/src/accounts.rs
#	runtime/src/bank.rs
#	sdk/src/feature_set.rs

* Fix conflicts

* Remove stale comment

Co-authored-by: Ryo Onodera <[email protected]>

Bump version to 1.5.13

Add error reporting to system program (solana-labs#15644) (solana-lab…

…s#15650)

(cherry picked from commit a9c8dbf)

Co-authored-by: Jack May <[email protected]>

Fix finalize_dead_slot_removal() of cached slots decrementing refcount (

solana-labs#15534) (solana-labs#15570)

(cherry picked from commit 97eaf3c)

Co-authored-by: carllin <[email protected]>