Changed

• bump golang from 1.17.2 to 1.17.5 (#115, #122, #124 by @dependabot)
• bump github.com/gin-gonic/gin from 1.7.4 to 1.7.7 (#119, #120 by @dependabot)
• bump github.com/lib/pq from 1.10.3 to 1.10.4 (#116 by @dependabot)
• bump various workflow versions (#118, #121, #123, #125, #126 by @dependabot)
• updating build workflow and Dockerfile (by @tobiasehlert)