feat: [PromptRegistry] Spec Update - Make `inputParams` required in `/substitution`#679

rpanackal wants to merge 1 commit intomainSAP/ai-sdk-java:mainfrom

spec-update/prompt-registry/feat/require-inputParam-substitutionSAP/ai-sdk-java:spec-update/prompt-registry/feat/require-inputParam-substitutionCopy head branch name to clipboard