Upgraded some dependencies

Dockerfile

 FROM golang:1.19.0-buster as builder
 WORKDIR /
 RUN apt-get update && apt-get install unzip
-RUN wget https://github.com/protocolbuffers/protobuf/releases/download/v3.19.4/protoc-3.19.4-linux-x86_64.zip
-RUN unzip protoc-3.19.4-linux-x86_64.zip -d /
+RUN wget https://github.com/protocolbuffers/protobuf/releases/download/v3.20.3/protoc-3.20.3-linux-x86_64.zip
+RUN unzip protoc-3.20.3-linux-x86_64.zip -d /
 WORKDIR /build
 COPY api/ api
 COPY pkg/ pkg

build_and_publish.sh

 #!/bin/bash
 
-TAG=1.5.1
+TAG=1.5.3
 WHAT=janitor
 sudo docker build --rm -t artifactory.software.geant.org/nmaas-docker-local/nmaas-$WHAT:$TAG .
 sudo docker push artifactory.software.geant.org/nmaas-docker-local/nmaas-$WHAT:$TAG

go.mod

 module bitbucket.software.geant.org/projects/NMAAS/repos/nmaas-janitor
 
 require (
-	github.com/golang/protobuf v1.5.2
+	github.com/golang/protobuf v1.5.3
 	github.com/johnaoss/htpasswd v0.0.0-20190120213328-a0cc59f788da
-	github.com/xanzy/go-gitlab v0.73.1
-	golang.org/x/net v0.0.0-20220907135653-1e95f45603a7
-	google.golang.org/grpc v1.49.0
-	google.golang.org/protobuf v1.28.1
+	github.com/xanzy/go-gitlab v0.86.0
+	golang.org/x/net v0.8.0
+	google.golang.org/grpc v1.55.0
+	google.golang.org/protobuf v1.29.1
 	gopkg.in/yaml.v2 v2.4.0
 	k8s.io/api v0.20.15
 	k8s.io/apimachinery v0.20.15