Pin weaver version with hash (#272)

Author: trask

.github/renovate.json5

@@ -33,8 +33,10 @@
         '/^build.gradle.kts$/',
       ],
       matchStrings: [
-        '"(?<depName>otel/weaver):(?<currentValue>[^"]+)"',
+        '(?<depName>otel/weaver):(?<currentValue>[^@"]+)(?:@(?<currentDigest>sha256:[a-f0-9]+))?',
       ],
+      autoReplaceStringTemplate: '{{depName}}:{{newValue}}{{#if newDigest}}@{{newDigest}}{{/if}}',
+      versioningTemplate: 'docker',
     },
     {
       customType: 'regex',