fix: revert old epoch durations (#37)

## Description

We've set shorter duration for epochs to test things. Now we need to
revert changes in these epochs.

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in the PR title
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x/epochs/types/genesis.go

@@ -35,7 +35,7 @@ func DefaultGenesis() *GenesisState {
 		{
 			Identifier:              DAY_EPOCH,
 			StartTime:               time.Time{},
-			Duration:                120 * time.Second,
+			Duration:                time.Hour * 24,
 			CurrentEpoch:            0,
 			CurrentEpochStartHeight: 0,
 			CurrentEpochStartTime:   time.Time{},
@@ -44,7 +44,7 @@ func DefaultGenesis() *GenesisState {
 		{
 			Identifier:              STRIDE_EPOCH,
 			StartTime:               time.Time{},
-			Duration:                30 * time.Second,
+			Duration:                time.Hour * 6,
 			CurrentEpoch:            0,
 			CurrentEpochStartHeight: 0,
 			CurrentEpochStartTime:   time.Time{},
@@ -53,7 +53,7 @@ func DefaultGenesis() *GenesisState {
 		{
 			Identifier:              MINT_EPOCH,
 			StartTime:               time.Time{},
-			Duration:                120 * time.Second,
+			Duration:                time.Minute * 60,
 			CurrentEpoch:            0,
 			CurrentEpochStartHeight: 0,
 			CurrentEpochStartTime:   time.Time{},
@@ -62,7 +62,7 @@ func DefaultGenesis() *GenesisState {
 		{
 			Identifier:              HOUR_EPOCH,
 			StartTime:               time.Time{},
-			Duration:                30 * time.Second,
+			Duration:                time.Hour,
 			CurrentEpoch:            0,
 			CurrentEpochStartHeight: 0,
 			CurrentEpochStartTime:   time.Time{},