Allow `.tpl` of database secret names and image repository and tag

[mhotan]

Context: Union uses flyte-core as a subchart. This pattern is likely applicable for other organizations as well.

This PR makes it so .Values.flyte.common.databaseSecret.name, *.image.repository, *.image.tag respects Helm template values through the tpl function.

Additionally, we are updating Helm version to 3.19 as it is more up to date with latest release.

• This pull request enhances the handling of database secrets in Helm templates by enabling dynamic referencing of the database secret name.
• It modifies various deployment configurations to allow the use of templated values for image references and database secret names.
• This improvement increases flexibility and configurability in secret management for deployments, allowing the secret name to be set using Helm template values.
• Overall, the changes touch on YAML configuration files and deployment configurations, introducing risks related to secret management.

Summary by Bito

• This pull request enhances the handling of database secrets in Helm templates by enabling dynamic referencing of the database secret name.
• It updates various deployment configurations to allow the use of templated values for image references and database secret names.
• The Helm version is upgraded to 3.19.0, ensuring compatibility with the latest features.
• Overall, these changes improve flexibility and configurability in secret management for deployments.

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 59.72%. Comparing base (74d9e86) to head (16fb9a7). :warning: Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6711      +/-   ##
==========================================
+ Coverage   58.57%   59.72%   +1.14%     
==========================================
  Files         929      929              
  Lines       70879    57995   -12884     
==========================================
- Hits        41520    34636    -6884     
+ Misses      26206    20206    -6000     
  Partials     3153     3153              

Flag	Coverage Δ
unittests-datacatalog	60.30% <ø> (+1.27%)	:arrow_up:
unittests-flyteadmin	57.90% <ø> (+1.76%)	:arrow_up:
unittests-flytecopilot	43.16% <ø> (+1.79%)	:arrow_up:
unittests-flytectl	65.31% <ø> (+0.61%)	:arrow_up:
unittests-flyteidl	78.64% <ø> (+2.52%)	:arrow_up:
unittests-flyteplugins	62.02% <ø> (+1.01%)	:arrow_up:
unittests-flytepropeller	55.56% <ø> (+0.50%)	:arrow_up:
unittests-flytestdlib	63.97% <ø> (+0.91%)	:arrow_up:

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[Sovietaced]

@mhotan can you fix the conflicts?