fix(pkgmanager): prevent nil pointer dereference on malformed boss.json (issues #177, #178) - #250

Failed to run: Error: invalid version string 'v1.64', golangci-lint v1 is not supported by golangci-lint-action >= v7., Error: invalid version string 'v1.64', golangci-lint v1 is not supported by golangci-lint-action >= v7. at parseVersion (/home/runner/work/_actions/golangci/golangci-lint-action/v9/dist/run/index.js:59743:15) at getRequestedVersion (/home/runner/work/_actions/golangci/golangci-lint-action/v9/dist/run/index.js:59814:36) at getVersion (/home/runner/work/_actions/golangci/golangci-lint-action/v9/dist/run/index.js:59847:24) at install (/home/runner/work/_actions/golangci/golangci-lint-action/v9/dist/run/index.js:58909:56) at /home/runner/work/_actions/golangci/golangci-lint-action/v9/dist/run/index.js:59491:81 at Object.<anonymous> (/home/runner/work/_actions/golangci/golangci-lint-action/v9/dist/run/index.js:4281:28) at Generator.next (<anonymous>) at /home/runner/work/_actions/golangci/golangci-lint-action/v9/dist/run/index.js:4003:71 at new Promise (<anonymous>) at __webpack_modules__.37484.__awaiter (/home/runner/work/_actions/golangci/golangci-lint-action/v9/dist/run/index.js:3999:12)