Apply suggestions from code review

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

src/main/kotlin/dev/usbharu/hideout/config/SecurityConfig.kt

@@ -84,7 +84,6 @@ class SecurityConfig {
         return http.build()
     }
 
-
     @Bean
     fun getHttpSignatureFilter(authenticationManager: AuthenticationManager): HttpSignatureFilter {
         val httpSignatureFilter = HttpSignatureFilter(DefaultSignatureHeaderParser())
@@ -97,14 +96,17 @@ class SecurityConfig {
         val provider = PreAuthenticatedAuthenticationProvider()
         provider.setPreAuthenticatedUserDetailsService(
             HttpSignatureUserDetailsService(
-                userQueryService, HttpSignatureVerifierComposite(
+                userQueryService,
+                HttpSignatureVerifierComposite(
                     mapOf(
                         "rsa-sha256" to RsaSha256HttpSignatureVerifier(
                             DefaultSignatureHeaderParser(),
                             RsaSha256HttpSignatureSigner()
                         )
-                    ), DefaultSignatureHeaderParser()
-                ), transaction
+                    ),
+                    DefaultSignatureHeaderParser()
+                ),
+                transaction
             )
         )
         provider.setUserDetailsChecker(AccountStatusUserDetailsChecker())

src/main/kotlin/dev/usbharu/hideout/service/signature/HttpSignatureFilter.kt

@@ -11,13 +11,11 @@ import java.net.URL
 class HttpSignatureFilter(private val httpSignatureHeaderParser: SignatureHeaderParser) :
     AbstractPreAuthenticatedProcessingFilter() {
     override fun getPreAuthenticatedPrincipal(request: HttpServletRequest?): Any {
-
         val headersList = request?.headerNames?.toList().orEmpty()
 
         val headers =
             headersList.associateWith { header -> request?.getHeaders(header)?.toList().orEmpty() }
 
-
         val signature = httpSignatureHeaderParser.parse(HttpHeaders(headers))
         return signature.keyId
     }
@@ -45,5 +43,4 @@ class HttpSignatureFilter(private val httpSignatureHeaderParser: SignatureHeader
             method
         )
     }
-
 }

src/main/kotlin/dev/usbharu/hideout/service/signature/HttpSignatureUser.kt

@@ -23,5 +23,4 @@ class HttpSignatureUser(
         @Serial
         private const val serialVersionUID: Long = -3330552099960982997L
     }
-
 }

src/main/kotlin/dev/usbharu/hideout/service/signature/HttpSignatureUserDetailsService.kt

@@ -23,8 +23,6 @@ class HttpSignatureUserDetailsService(
     AuthenticationUserDetailsService<PreAuthenticatedAuthenticationToken> {
     override fun loadUserDetails(token: PreAuthenticatedAuthenticationToken): UserDetails = runBlocking {
         transaction.transaction {
-
-
             if (token.principal !is String) {
                 throw IllegalStateException("Token is not String")
             }