feat(deps): upgrade to docker-compose v5

The following downloads the finished docker-compose v5 binary and delivers it as
a scratch container image.

.gitea/workflows/build.yaml

@@ -1,10 +1,5 @@
 name: Build
 
-env:
-  GONOSUMDB: ${{ vars.GONOSUMDB }}
-  GOPRIVATE: ${{ vars.GOPRIVATE }}
-  GOPROXY: ${{ vars.GOPROXY }}
-
 on:
   pull_request:
     types:
@@ -29,9 +24,6 @@ jobs:
           TAG=latest
 
           docker buildx build \
-            --build-arg GONOSUMDB=${GONOSUMDB} \
-            --build-arg GOPRIVATE=${GOPRIVATE} \
-            --build-arg GOPROXY=${GOPROXY} \
             --platform linux/arm64 \
             --file Dockerfile \
             --provenance false \
@@ -50,9 +42,6 @@ jobs:
           TAG=latest
 
           docker buildx build \
-            --build-arg GONOSUMDB=${GONOSUMDB} \
-            --build-arg GOPRIVATE=${GOPRIVATE} \
-            --build-arg GOPROXY=${GOPROXY} \
             --platform linux/amd64 \
             --file Dockerfile \
             --provenance false \

.gitea/workflows/release.yaml

@@ -1,8 +1,5 @@
 name: Release
 
-env:
-  GOPROXY: ${{ vars.GOPROXY }}
-
 on:
   push:
     tags:
@@ -48,9 +45,6 @@ jobs:
         run: |
           docker buildx build \
             --build-arg DC_VERSION=${{ steps.version_extraction.outputs.version_raw }} \
-            --build-arg GONOSUMDB=${GONOSUMDB} \
-            --build-arg GOPRIVATE=${GOPRIVATE} \
-            --build-arg GOPROXY=${GOPROXY} \
             --file Dockerfile \
             --platform linux/arm64 \
             --provenance false \
@@ -91,9 +85,6 @@ jobs:
         run: |
           docker buildx build \
             --build-arg DC_VERSION=${{ steps.version_extraction.outputs.version_raw }} \
-            --build-arg GONOSUMDB=${GONOSUMDB} \
-            --build-arg GOPRIVATE=${GOPRIVATE} \
-            --build-arg GOPROXY=${GOPROXY} \
             --file Dockerfile \
             --platform linux/amd64 \
             --provenance false \

.gitea/workflows/update-docker-hub-description.yaml

@@ -10,8 +10,7 @@ on:
 
 jobs:
   update-description-on-hub-docker-io:
-    runs-on:
-    - ubuntu-latest
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v6.0.1
     - uses: peter-evans/dockerhub-description@v5.0.0