bypass-lock for "list" and "info" to prevent errors from metrics

temporary workaround for borgbackup/borg#7255 as cache is still locked

src/metrics.py

@@ -1,5 +1,6 @@
 # pylint: disable=protected-access
 import json
+import os
 import subprocess
 from typing import Any
 
@@ -71,9 +72,9 @@ def set_metric(
 def collect(borgmatic_configs: list, registry):
     borgmatic_configs = " -c ".join(borgmatic_configs)
     # Overall repo info and last archive only
-    repos = run_command(f"borgmatic info -c {borgmatic_configs} --json --last 1")
+    repos = run_command(f"borgmatic info --bypass-lock -c {borgmatic_configs} --json --last 1")
     # All archives
-    archives = run_command(f"borgmatic list -c {borgmatic_configs} --json")
+    archives = run_command(f"borgmatic list --bypass-lock -c {borgmatic_configs} --json")
 
     for r, a in zip(repos, archives):
         labels = {"repository": r["repository"]["location"]}
@@ -144,10 +145,15 @@ def run_command(command: str) -> dict:
     Execute command via the command line and load the output into dictionary.
     """
     with timy.Timer(command):
+        # temporary workaround for https://github.com/borgbackup/borg/issues/7255
+        tmp_env=os.environ.copy()
+        tmp_env["HOME"]="/tmp/borgmatic-exporter-cache"
+        tmp_env["BORG_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK"]="yes"
         result = subprocess.run(
             command.split(" "),
             check=True,
             stdout=subprocess.PIPE,
+            env=tmp_env
         )
     output = result.stdout.decode("utf-8").strip()
     return json.loads(output)