Fix Docker build Go version compatibility

- Update MFA service Dockerfile to use golang:1.24-alpine (was 1.22)
- Add security-events permissions for SARIF uploads
- Make SARIF uploads non-blocking to prevent CI failures on permission issues

Resolves Docker build failures: 'go.mod requires go >= 1.24.0'

Co-authored-by: Amp <[email protected]>
Amp-Thread-ID: https://ampcode.com/threads/T-5be4213f-26eb-400c-bb7b-d4c79b7ee6fe

Author: haasonsaas

services/mfa/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.22-alpine AS builder
+FROM golang:1.24-alpine AS builder
 
 WORKDIR /app
 COPY go.mod go.sum ./