Increment spec version (#328)

### Description
<!-- Describe what change this PR is implementing -->

### Types of Changes
<!--- What types of changes does your code introduce? -->
- [ ] Tech Debt (Code improvements)
- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Dependency upgrade (A change in substrate or any 3rd party crate
version)

### Migrations and Hooks
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- [ ] This change requires a runtime migration.
- [ ] Modifies `on_initialize`
- [ ] Modifies `on_finalize`

### Checklist
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requiring PR review -->
- [x] Change has been tested locally.
- [ ] Change adds / updates tests.
- [ ] Changelog doc updated.

runtime/cere-dev/src/lib.rs

@@ -133,7 +133,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	// and set impl_version to 0. If only runtime
 	// implementation changes and behavior does not, then leave spec_version as
 	// is and increment impl_version.
-	spec_version: 52000,
+	spec_version: 52100,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 15,

runtime/cere/src/lib.rs

@@ -128,7 +128,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	// and set impl_version to 0. If only runtime
 	// implementation changes and behavior does not, then leave spec_version as
 	// is and increment impl_version.
-	spec_version: 52000,
+	spec_version: 52100,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 15,