bump squid to 5.2

Bumps alpine from 3.14.0 to 3.14.2.

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/stale.yml

@@ -0,0 +1,28 @@
+# This workflow warns and then closes issues and PRs that have had no activity for a specified amount of time.
+#
+# You can adjust the behavior by modifying this file.
+# For more information, see:
+# https://github.com/actions/stale
+name: Mark stale issues and pull requests
+
+on:
+  schedule:
+  - cron: '0 1 * * *'
+
+jobs:
+  stale:
+
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+
+    steps:
+    - uses: actions/stale@v3
+      with:
+        days-before-stale: 182
+        days-before-close: 7
+        stale-issue-message: 'Marking stale due to inactivity. Remove stale label or comment or this will be closed in 7 days.'
+        close-issue-message: 'Closing due to inactivity.'
+        stale-pr-message: 'Marking stale due to inactivity. Remove stale label or comment or this will be closed in 7 days.'
+        close-pr-message: 'Closing due to inactivity.'

Dockerfile

@@ -1,11 +1,6 @@
-FROM alpine:3.14.0 as build
+FROM alpine:3.14.2 as build
 
-ENV SQUID_VER 5.1
+ENV SQUID_VER 5.2
-
-# fix conflict with libretls and libressl
-RUN set -x && \
-	apk add --no-cache libretls && \
-	apk upgrade --no-cache libretls
 
 RUN set -x && \
 	apk add --no-cache  \
@@ -110,7 +105,7 @@ RUN set -x && \
 RUN sed -i '1s;^;include /etc/squid/conf.d/*.conf\n;' /etc/squid/squid.conf
 RUN echo 'include /etc/squid/conf.d.tail/*.conf' >> /etc/squid/squid.conf
 
-FROM alpine:3.14.0
+FROM alpine:3.14.2
 	
 ENV SQUID_CONFIG_FILE /etc/squid/squid.conf
 ENV TZ Europe/Moscow
@@ -119,11 +114,6 @@ RUN set -x && \
 	deluser squid 2>/dev/null; delgroup squid 2>/dev/null; \
 	addgroup -S squid -g 3128 && adduser -S -u 3128 -G squid -g squid -H -D -s /bin/false -h /var/cache/squid squid
 
-# fix conflict with libretls and libressl
-RUN set -x && \
-	apk add --no-cache libretls && \
-	apk upgrade --no-cache libretls
-
 RUN apk add --no-cache \
 		libstdc++ \
 		heimdal-libs \