Update Docker image to Alpine 3.18

Dockerfile

@@ -1,6 +1,6 @@
-FROM dock.mau.dev/tulir/lottieconverter:alpine-3.17 AS lottie
+FROM dock.mau.dev/tulir/lottieconverter:alpine-3.18 AS lottie
 
-FROM golang:1-alpine3.17 AS builder
+FROM golang:1-alpine3.18 AS builder
 
 RUN apk add --no-cache git ca-certificates build-base su-exec olm-dev
 
@@ -8,7 +8,7 @@ COPY . /build
 WORKDIR /build
 RUN go build -o /usr/bin/mautrix-discord
 
-FROM alpine:3.17
+FROM alpine:3.18
 
 ENV UID=1337 \
     GID=1337

Dockerfile.ci

@@ -1,6 +1,6 @@
-FROM dock.mau.dev/tulir/lottieconverter:alpine-3.17 AS lottie
+FROM dock.mau.dev/tulir/lottieconverter:alpine-3.18 AS lottie
 
-FROM alpine:3.17
+FROM alpine:3.18
 
 ENV UID=1337 \
     GID=1337

Dockerfile.dev

@@ -1,6 +1,6 @@
-FROM dock.mau.dev/tulir/lottieconverter:alpine-3.17 AS lottie
+FROM dock.mau.dev/tulir/lottieconverter:alpine-3.18 AS lottie
 
-FROM golang:1-alpine3.17 AS builder
+FROM golang:1-alpine3.18 AS builder
 
 RUN apk add --no-cache git ca-certificates build-base su-exec olm-dev bash jq yq curl \
     zlib libpng giflib libstdc++ libgcc