Swagger Codegen 2.4.49 released!

• fix: change example values for keys/tokens (#12644)
• remove java8 build from workflows (#12643)
• fix: revert to verify in workflow (#12631)
• [Python] Bugfix in model.mustache (#12630)
• fix: update workflow (#12628)
• feat: prevent path traversal attacks in Generator class(#12611) (#12620)