fix(core, common): handle error for closing io streams

[rksharma95]

Purpose of PR?:
There some unhandled errors in common and core packages reported by the gosec in the CI, all are related to the potential errors may occurred while closing the io stream. This PR fixes those issues.

[/home/runner/work/KubeArmor/KubeArmor/KubeArmor/common/common.go:254] - G307 (CWE-703): Deferring unsafe method "Close" on type "io.WriteCloser" (Confidence: HIGH, Severity: MEDIUM)
    253: 	go func() {
  > 254: 		defer stdin.Close()
    255: 		_, _ = io.WriteString(stdin, "values written to stdin are passed to cmd's standard input")

[/home/runner/work/KubeArmor/KubeArmor/KubeArmor/common/common.go:224] - G307 (CWE-703): Deferring unsafe method "Close" on type "io.WriteCloser" (Confidence: HIGH, Severity: MEDIUM)
    223: 	go func() {
  > 224: 		defer stdin.Close()
    225: 		_, _ = io.WriteString(stdin, "values written to stdin are passed to cmd's standard input")

[/home/runner/work/KubeArmor/KubeArmor/KubeArmor/core/kubeUpdate.go:2292] - G307 (CWE-703): Deferring unsafe method "Close" on type "io.ReadCloser" (Confidence: HIGH, Severity: MEDIUM)
    2291: 		if resp := K8s.WatchK8sHostSecurityPolicies(); resp != nil {
  > 2292: 			defer resp.Body.Close()
    2293: 

[/home/runner/work/KubeArmor/KubeArmor/KubeArmor/core/kubeUpdate.go:505] - G307 (CWE-703): Deferring unsafe method "Close" on type "io.ReadCloser" (Confidence: HIGH, Severity: MEDIUM)
    504: 		if resp := K8s.WatchK8sPods(); resp != nil {
  > 505: 			defer resp.Body.Close()
    506: 

[/home/runner/work/KubeArmor/KubeArmor/KubeArmor/core/kubeUpdate.go:99] - G307 (CWE-703): Deferring unsafe method "Close" on type "io.ReadCloser" (Confidence: HIGH, Severity: MEDIUM)
    98: 		if resp := K8s.WatchK8sNodes(); resp != nil {
  > 99: 			defer resp.Body.Close()

Does this PR introduce a breaking change?
No
If the changes in this PR are manually verified, list down the scenarios covered::

Additional information for reviewer? :
Mention if this PR is part of any design or a continuation of previous PRs

Checklist:

• Bug fix.
• PR Title follows the convention of <type>(<scope>): <subject>

[achrefbensaad]

LGTM!