chore(release): begin story client v0.12.1 unstable release (#204)

* chore(release): release version 0.12.1 unstable

* feat(epochs): revert epoch module (#198)

* feat(api): revert add epochs api

* feat(epochs): revert porting epochs module

* feat(evmstaking): use deterministic cosmos sdk (#211)

* feat(evmstaking): replace staking keeper endblocker (#209)

---------

Co-authored-by: Hans Lee <38912532+0xHansLee@users.noreply.github.com>
Co-authored-by: Zerui Ge <gezerui1997@gmail.com>

lib/buildinfo/buildinfo.go

@@ -13,10 +13,10 @@ import (
 )
 
 const (
-	VersionMajor = 0        // Major version component of the current release
-	VersionMinor = 12       // Minor version component of the current release
-	VersionPatch = 0        // Patch version component of the current release
-	VersionMeta  = "stable" // Version metadata to append to the version string
+	VersionMajor = 0          // Major version component of the current release
+	VersionMinor = 12         // Minor version component of the current release
+	VersionPatch = 1          // Patch version component of the current release
+	VersionMeta  = "unstable" // Version metadata to append to the version string
 )
 
 // Version returns the version of the whole story-monorepo and all binaries built from this git commit.