KFP-Tekton v1.5.0: Tekton 0.41.0 and Kubernetes 1.25 support with new image and db configs

• Support Tekton 0.41.0 and Kubernetes 1.25
• Add new configs for result step image and db tables
• Testing infra and tests are moved to GO 1.19+
• Fix SDK bugs on pipelineloop and custom tasks

What's Changed

• chore(CI): Update go version in CI to 1.19.x by @Tomcli in #1069
• update toolchain image by @yhwang in #1071
• fix(sdk): fix nested loop underscore param by @Tomcli in #1076
• fix(bug): fix underscore param by checking pipeline param instead of task param by @Tomcli in #1077
• fix(sdk): add default labels for caching by @Tomcli in #1078
• chore(PipelineLoop): upgrade to tekton v0.41.0 by @ScrapCodes in #1072
• update tekton version to 0.41 by @Tomcli in #1070
• fix(sdk): fix nested loop counter param bug by @Tomcli in #1080
• chore(v2): cleanup old v2 content from v1 branch by @Tomcli in #1083
• fix(sdk): Fix inline spec for iterateParamPassStyle and itemPassStyle by @Tomcli in #1087
• fix(sdk): fix nested param generation issue by @Tomcli in #1089
• fix(sdk): fix nested param logic for pl by @Tomcli in #1091
• chore(sdk): update sdk version to 1.4.1 (#1093) by @Tomcli in #1106
• feat(backend): specify the image for result step by @yhwang in #1104
• feat(sdk): add pipeline_conf.timeout sdk support by @Tomcli in #1108
• fix(sdk): Update custom task arg parsing for dash arguments by @Tomcli in #1114
• feat(backend): Update db table config with Primary key to improve db read performance by @Tomcli in #1116
• chore(release): Add 1.4.1 release patch by @Tomcli in #1117
• chore(release): Add 1.5.0 release patch by @Tomcli in #1118

Full Changelog: v1.4.0...v1.5.0