fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE316-BUSYBOX-6913410
- https://snyk.io/vuln/SNYK-ALPINE316-BUSYBOX-6913410
- https://snyk.io/vuln/SNYK-ALPINE316-MUSL-8720632
- https://snyk.io/vuln/SNYK-ALPINE316-MUSL-8720632

Author: snyk-bot

Dockerfile

@@ -3,7 +3,7 @@ WORKDIR /go/src/github.com/stuart-warren/yamlfmt/
 COPY . .
 RUN CGO_ENABLED=0 GOOS=linux go build -a -o yamlfmt ./cmd/yamlfmt
 
-FROM alpine:3.16  
+FROM alpine:3.22.2  
 RUN apk --no-cache add diffutils
 WORKDIR /tmp
 COPY --from=0 /go/src/github.com/stuart-warren/yamlfmt/yamlfmt /usr/local/bin/yamlfmt