chore(deps): update golang docker tag to v1.21

.drone.yml

@@ -3,19 +3,19 @@ kind: pipeline
 name: coopcloud.tech/abra
 steps:
   - name: make check
-    image: golang:1.20
+    image: golang:1.21
     commands:
       - make check
 
   - name: make build
-    image: golang:1.20
+    image: golang:1.21
     commands:
       - make build
     depends_on:
       - make check
 
   - name: make test
-    image: golang:1.20
+    image: golang:1.21
     commands:
       - make test
     depends_on:

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.20-alpine AS build
+FROM golang:1.21-alpine AS build
 
 ENV GOPRIVATE coopcloud.tech