Update supported go versions

Following our policy regarding supported go releases, change the
supported go versions to 1.19.* and 1.20.* with the release of go 1.20.
diff --git a/build/docker/ubuntu-bionic/Dockerfile b/build/docker/ubuntu-bionic/Dockerfile
index e8f8b24..873dad8 100644
--- a/build/docker/ubuntu-bionic/Dockerfile
+++ b/build/docker/ubuntu-bionic/Dockerfile
@@ -144,9 +144,9 @@
       libglib2.0-dev
 
 # golang
-ENV GOLANG_VERSION 1.18.7
+ENV GOLANG_VERSION 1.19.5
 ENV GOLANG_DOWNLOAD_URL https://go.dev/dl/go$GOLANG_VERSION.linux-amd64.tar.gz
-ENV GOLANG_DOWNLOAD_SHA256 6c967efc22152ce3124fc35cdf50fc686870120c5fd2107234d05d450a6105d8
+ENV GOLANG_DOWNLOAD_SHA256 36519702ae2fd573c9869461990ae550c8c0d955cd28d2827a6b159fda81ff95
 RUN curl -fsSL "$GOLANG_DOWNLOAD_URL" -o golang.tar.gz && \
       echo "$GOLANG_DOWNLOAD_SHA256  golang.tar.gz" | sha256sum -c - && \
       tar -C /usr/local -xzf golang.tar.gz && \
diff --git a/build/docker/ubuntu-focal/Dockerfile b/build/docker/ubuntu-focal/Dockerfile
index 035c964..0a8c1c7 100644
--- a/build/docker/ubuntu-focal/Dockerfile
+++ b/build/docker/ubuntu-focal/Dockerfile
@@ -145,9 +145,9 @@
       libglib2.0-dev
 
 # golang
-ENV GOLANG_VERSION 1.19.2
+ENV GOLANG_VERSION 1.20
 ENV GOLANG_DOWNLOAD_URL https://go.dev/dl/go$GOLANG_VERSION.linux-amd64.tar.gz
-ENV GOLANG_DOWNLOAD_SHA256 5e8c5a74fe6470dd7e055a461acda8bb4050ead8c2df70f227e3ff7d8eb7eeb6
+ENV GOLANG_DOWNLOAD_SHA256 5a9ebcc65c1cce56e0d2dc616aff4c4cedcfbda8cc6f0288cc08cda3b18dcbf1
 RUN curl -fsSL "$GOLANG_DOWNLOAD_URL" -o golang.tar.gz && \
       echo "$GOLANG_DOWNLOAD_SHA256  golang.tar.gz" | sha256sum -c - && \
       tar -C /usr/local -xzf golang.tar.gz && \
diff --git a/build/docker/ubuntu-jammy/Dockerfile b/build/docker/ubuntu-jammy/Dockerfile
index f6b7d04..7d56cc5 100644
--- a/build/docker/ubuntu-jammy/Dockerfile
+++ b/build/docker/ubuntu-jammy/Dockerfile
@@ -145,9 +145,9 @@
   libglib2.0-dev
 
 # golang
-ENV GOLANG_VERSION 1.19.2
+ENV GOLANG_VERSION 1.20
 ENV GOLANG_DOWNLOAD_URL https://go.dev/dl/go$GOLANG_VERSION.linux-amd64.tar.gz
-ENV GOLANG_DOWNLOAD_SHA256 5e8c5a74fe6470dd7e055a461acda8bb4050ead8c2df70f227e3ff7d8eb7eeb6
+ENV GOLANG_DOWNLOAD_SHA256 5a9ebcc65c1cce56e0d2dc616aff4c4cedcfbda8cc6f0288cc08cda3b18dcbf1
 RUN curl -fsSL "$GOLANG_DOWNLOAD_URL" -o golang.tar.gz && \
   echo "$GOLANG_DOWNLOAD_SHA256  golang.tar.gz" | sha256sum -c - && \
   tar -C /usr/local -xzf golang.tar.gz && \