fix: [CI-13178]: Upgrade go version with minor version to 1.22.4 (#120)

The kaniko flag `snapshotMode` is deprecated in favor of `snapshot-mode`. The default value of `snapshot-mode` is `full`. As a result, the `optimize` flag set in Harness CI's `BuildAndPushToDocker` steps doesn't behave as expected because the `full` mode triggers a full filesystem scan which is slow. The `optimize` flag in Harness translates to `snapshot-mode=redo` which means only filesystem deltas are compared which is much faster. 

This change fixes the flag name being sent to Kaniko executor. I verified that the executor present in the current version already supports this flag as shown below:

```
hemanthkumarmantri@Hemanth Kumar harness-core % docker run -it --entrypoint /kaniko/executor plugins/kaniko:1.8.10 --help | grep snapshot-mode
      --snapshot-mode string                      Change the file attributes inspected during snapshotting (default "full")
      --snapshotMode string                       This flag is deprecated. Please use '--snapshot-mode'.
```

.drone.yml

@@ -11,7 +11,7 @@ platform:
 
 steps:
 - name: build
-  image: golang:1.22
+  image: golang:1.22.4
   commands:
   - go test ./...
   - sh scripts/build.sh
@@ -178,7 +178,7 @@ pool:
 
 steps:
 - name: build
-  image: golang:1.22
+  image: golang:1.22.4
   commands:
   - go test ./...
   - sh scripts/build.sh

go.mod

@@ -47,4 +47,4 @@ require (
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
-go 1.22.0
+go 1.22.4

kaniko.go

@@ -222,7 +222,7 @@ func (p Plugin) Exec() error {
 	}
 
 	if p.Build.SnapshotMode != "" {
-		cmdArgs = append(cmdArgs, fmt.Sprintf("--snapshotMode=%s", p.Build.SnapshotMode))
+		cmdArgs = append(cmdArgs, fmt.Sprintf("--snapshot-mode=%s", p.Build.SnapshotMode))
 	}
 
 	if p.Build.EnableCache {