updating golang.org/x/text module to v0.3.8 to address trivy vulnerab…

[xphyr]

Description

Upgrade golang.org/x/text version to v0.3.8 to fix build failure due to Trivy security scan failure.

Relevant issues/tickets

Current builds are failing due to:

Running trivy with options: trivy image  --format table --exit-code  1 --ignore-unfixed --vuln-type  os,library --severity  CRITICAL,HIGH  registry:5000/grafana-operator:sha-21e52787
Global options:  
[20](https://github.com/grafana-operator/grafana-operator/actions/runs/3490358882/jobs/5842435939#step:12:21)22-11-17T17:54:06.748Z	INFO	Need to update DB
2022-11-17T17:54:06.748Z	INFO	DB Repository: ghcr.io/aquasecurity/trivy-db
2022-11-17T17:54:06.748Z	INFO	Downloading DB...
35.03 MiB / 35.03 MiB [----------------------------------------------------------->] 100.00% ? p/s ?35.03 MiB / 35.03 MiB [----------------------------------------------------------->] 100.00% ? p/s ?35.03 MiB / 35.03 MiB [----------------------------------------------------------->] 100.00% ? p/s ?35.03 MiB / 35.03 MiB [----------------------------------------------------------->] 100.00% ? p/s ?35.03 MiB / 35.03 MiB [----------------------------------------------------------->] 100.00% ? p/s ?35.03 MiB / 35.03 MiB [----------------------------------------------------------->] 100.00% ? p/s ?35.03 MiB / 35.03 MiB [----------------------------------------------------------->] 100.00% ? p/s ?35.03 MiB / 35.03 MiB [-------------------------------------------------] 100.00% 28.27 MiB p/s 1.4s2022-11-17T17:54:08.593Z	INFO	Vulnerability scanning is enabled
2022-11-17T17:54:08.593Z	INFO	Secret scanning is enabled
2022-11-17T17:54:08.593Z	INFO	If your scanning is slow, please try '--security-checks vuln' to disable secret scanning
2022-11-17T17:54:08.593Z	INFO	Please see also https://aquasecurity.github.io/trivy/v0.34/docs/secret/scanning/#recommendation for faster secret detection
2022-11-17T17:54:10.360Z	INFO	Detected OS: redhat
2022-11-17T17:54:10.360Z	INFO	Detecting RHEL/CentOS vulnerabilities...
2022-11-17T17:54:10.365Z	INFO	Number of language-specific files: 1
2022-11-17T17:54:10.365Z	INFO	Detecting gobinary vulnerabilities...

registry:5000/grafana-operator:sha-[21](https://github.com/grafana-operator/grafana-operator/actions/runs/3490358882/jobs/5842435939#step:12:22)e52787 (redhat 8.6)
========================================================
Total: 0 (HIGH: 0, CRITICAL: 0)


manager (gobinary)
==================
Total: 1 (HIGH: 1, CRITICAL: 0)

┌───────────────────┬────────────────┬──────────┬───────────────────┬───────────────┬─────────────────────────────────────────────────────────┐
│      Library      │ Vulnerability  │ Severity │ Installed Version │ Fixed Version │                          Title                          │
├───────────────────┼────────────────┼──────────┼───────────────────┼───────────────┼─────────────────────────────────────────────────────────┤
│ golang.org/x/text │ CVE-20[22](https://github.com/grafana-operator/grafana-operator/actions/runs/3490358882/jobs/5842435939#step:12:23)-[32](https://github.com/grafana-operator/grafana-operator/actions/runs/3490358882/jobs/5842435939#step:12:33)149 │ HIGH     │ v0.3.7            │ 0.3.8         │ golang: golang.org/x/text/language: ParseAcceptLanguage │
│                   │                │          │                   │               │ takes a long time to parse complex tags                 │
│                   │                │          │                   │               │ https://avd.aquasec.com/nvd/cve-2022-32149              │
└───────────────────┴────────────────┴──────────┴───────────────────┴───────────────┴─────────────────────────────────────────────────────────┘

Type of change

• 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 not work as expected)

Checklist

• This change requires a documentation update
• I have added tests that prove my fix is effective or that my feature works
• I have added a test case that will be used to verify my changes
• Verified independently on a cluster by reviewer

Verification steps

ran build process locally and built successfully