Revert setcap, update rust and crates

- Revert #3170 as discussed in #3387
  In hindsight it's better to not have this feature
- Update Dockerfile.j2 for easy version changes.
  Just change it in one place instead of multiple
- Updated to Rust to latest patched version
- Updated crates to latest available
- Pinned mimalloc to an older version, as it breaks on musl builds

docker/armv6/Dockerfile.buildkit

@@ -2,7 +2,6 @@
 
 # This file was generated using a Jinja2 template.
 # Please make your changes in `Dockerfile.j2` and then `make` the individual Dockerfiles.
-
 # Using multistage build:
 # 	https://docs.docker.com/develop/develop-images/multistage-build/
 # 	https://whitfin.io/speeding-up-rust-docker-builds/
@@ -27,7 +26,7 @@
 FROM vaultwarden/web-vault@sha256:aa6ba791911a815ea570ec2ddc59992481c6ba8fbb65eed4f7074b463430d3ee as vault
 
 ########################## BUILD IMAGE  ##########################
-FROM rust:1.68.1-bullseye as build
+FROM rust:1.68.2-bullseye as build
 
 # Build time options to avoid dpkg warnings and help with reproducible builds.
 ENV DEBIAN_FRONTEND=noninteractive \
@@ -48,7 +47,6 @@ RUN dpkg --add-architecture armel \
         --no-install-recommends \
         gcc-arm-linux-gnueabi \
         libc6-dev:armel \
-        libcap2-bin \
         libmariadb-dev:armel \
         libmariadb-dev-compat:armel \
         libmariadb3:armel \
@@ -98,12 +96,6 @@ RUN touch src/main.rs
 # your actual source files being built
 RUN --mount=type=cache,target=/root/.cargo/git --mount=type=cache,target=/root/.cargo/registry cargo build --features ${DB} --release --target=arm-unknown-linux-gnueabi
 
-# Add the `cap_net_bind_service` capability to allow listening on
-# privileged (< 1024) ports even when running as a non-root user.
-# This is only done if building with BuildKit; with the legacy
-# builder, the `COPY` instruction doesn't carry over capabilities.
-RUN setcap cap_net_bind_service=+ep target/arm-unknown-linux-gnueabi/release/vaultwarden
-
 ######################## RUNTIME IMAGE  ########################
 # Create a new stage with a minimal image
 # because we already have a binary built