chore(deps): update helm chart dex to v0.6.0

[renovate-self-hosted]

This PR contains the following updates:

Package	Update	Change
dex (source)	minor	0.5.0 -> 0.6.0

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Release Notes

dexidp/dex

v0.6.0

Compare Source

Changes since last release:

• Deprecate --email-from flag and clean up email config options (#​487)
• Add "groups" scope to return list of groups in claims, LDAP only supported implementation (#​510)
• Dex can no be used at a relative path (#​520, #​521, #​522, #​558)
• Fix API for bearer tokens with multiple audiences (#​531)
• Set display name when registering a user (#​537)
• Added UAA connector (#​542)
• Added refresh token rotation, aka refresh tokens can only be used once (#​540)
• Added option to use client credentials against worker API (#​529)
• Token response now includes mandatory "expires_in" field (#​575)

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