bump golang.org/x/crypto & golang.org/x/text deps to address CVEs

[finnigja]

This change bumps golang.org/x/crypto and golang.org/x/text dependencies to address CVE-2022-27291 and CVE-2021-38561 respectively.

Proposed changes are the result of running in the vault-k8s root:

go get -u golang.org/x/crypto
go get -u golang.org/x/text
go mod tidy

There's no known exposure of this issues within the vault-k8s context, but adopting updates for hygiene sake & to reduce vulnerability scanner noise. For example, Trivy results from the current release:

$ trivy fs --ignore-unfixed vault-k8s
[snip]
 
Total: 2 (UNKNOWN: 1, LOW: 0, MEDIUM: 0, HIGH: 1, CRITICAL: 0)

+---------------------+------------------+----------+------------------------------------+-----------------------------------+---------------------------------------+
|       LIBRARY       | VULNERABILITY ID | SEVERITY |         INSTALLED VERSION          |           FIXED VERSION           |                 TITLE                 |
+---------------------+------------------+----------+------------------------------------+-----------------------------------+---------------------------------------+
| golang.org/x/crypto | CVE-2022-27191   | HIGH     | v0.0.0-20210220033148-5ea612d1eb83 | 0.0.0-20220315160706-3147a52a75dd | golang: crash in a                    |
|                     |                  |          |                                    |                                   | golang.org/x/crypto/ssh server        |
|                     |                  |          |                                    |                                   | -->avd.aquasec.com/nvd/cve-2022-27191 |
+---------------------+------------------+----------+------------------------------------+-----------------------------------+---------------------------------------+
| golang.org/x/text   | CVE-2021-38561   | UNKNOWN  | v0.3.6                             | 0.3.7                             | -->avd.aquasec.com/nvd/cve-2021-38561 |
+---------------------+------------------+----------+------------------------------------+-----------------------------------+---------------------------------------+

[swenson]

LGTM