fix: Fix regex patterns and whitespace in renovate.json5 (#2039)

Author: thompson-tomo

.github/renovate.json5

@@ -84,14 +84,14 @@
         "/(^|/)Dockerfile\\.[^/]*$/",
       ],
       matchStrings: [
-        "FROM\\s+(?<packageName>.+):(?<depVersion>[0-9.]+)-alpine(?<alpineVersion>[0-9.]+)@(?<currentDigest>sha256:[a-f0-9]{40,64})",
-        "FROM\\s+(?<packageName>.+):(?<depVersion>[0-9.]+)-alpine(?<alpineVersion>[0-9.]+)",
+        "FROM\\s+(?<packageName>.+):(?<depVersion>[0-9.]+)-alpine(?<alpineVersion>[0-9.]+)@(?<currentDigest>sha256:[a-f0-9]{40,64})\\s",
+        "FROM\\s+(?<packageName>.+):(?<depVersion>[0-9.]+)-alpine(?<alpineVersion>[0-9.]+)\\s",
       ],
       datasourceTemplate: "docker",
       versioningTemplate: "docker",
       currentValueTemplate: "{{depVersion}}",
       extractVersionTemplate: "^(?<version>[0-9.]+)-alpine{{alpineVersion}}$",
-      autoReplaceStringTemplate: "FROM {{packageName}}:{{newVersion}}-alpine{{alpineVersion}}@{{newDigest}}",
+      autoReplaceStringTemplate: "FROM {{packageName}}:{{newVersion}}-alpine{{alpineVersion}}@{{newDigest}} ",
     },
     {
       customType: "regex",
@@ -101,15 +101,15 @@
         "/(^|/)Dockerfile\\.[^/]*$/",
       ],
       matchStrings: [
-        "FROM\\s+(?<packageName>.+):(?<depVersion>[0-9.]+)-alpine(?<alpineVersion>[0-9.]+)@(?<currentDigest>sha256:[a-f0-9]{40,64})",
-        "FROM\\s+(?<packageName>.+):(?<depVersion>[0-9.]+)-alpine(?<alpineVersion>[0-9.]+)s",
+        "FROM\\s+(?<packageName>.+):(?<depVersion>[0-9.]+)-alpine(?<alpineVersion>[0-9.]+)@(?<currentDigest>sha256:[a-f0-9]{40,64})\\s",
+        "FROM\\s+(?<packageName>.+):(?<depVersion>[0-9.]+)-alpine(?<alpineVersion>[0-9.]+)\\s",
       ],
       datasourceTemplate: "docker",
       versioningTemplate: "docker",
       currentValueTemplate: "{{alpineVersion}}",
       extractVersionTemplate: "^{{depVersion}}-alpine(?<version>[0-9.]+)$",
       depNameTemplate: "{{packageName}}-alpine",
-      autoReplaceStringTemplate: "FROM {{packageName}}:{{depVersion}}-alpine{{newVersion}}@{{newDigest}}",
+      autoReplaceStringTemplate: "FROM {{packageName}}:{{depVersion}}-alpine{{newVersion}}@{{newDigest}} ",
     },
     {
       customType: "regex",