Resolve deprecation warnings related to string formatting for views

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

app/src/main/java/com/aurora/store/util/CertUtil.kt

@@ -82,7 +82,7 @@ object CertUtil {
             val cert = certificates[0]
 
             if (cert.subjectDN != null) {
-                val DN = cert.subjectDN.name.toUpperCase(Locale.getDefault())
+                val DN = cert.subjectDN.name.uppercase(Locale.getDefault())
                 DN.contains(FDROID) || DN.contains(GUARDIAN)
             } else {
                 false

app/src/main/java/com/aurora/store/view/custom/layouts/PermissionGroup.kt

@@ -118,7 +118,13 @@ class PermissionGroup : LinearLayout {
                 title = "Android"
             }
 
-            title = title.capitalize(Locale.getDefault())
+            title = title.replaceFirstChar {
+                if (it.isLowerCase()) {
+                    it.titlecase(Locale.getDefault())
+                } else {
+                    it.toString()
+                }
+            }
 
             context.showDialog(title, description)
         }
@@ -154,10 +160,22 @@ class PermissionGroup : LinearLayout {
                     return it.replace(it, "")
                         .replace("_", " ")
                         .lowercase(Locale.getDefault())
-                        .capitalize(Locale.getDefault())
+                        .replaceFirstChar {
+                            if (it.isLowerCase()) {
+                                it.titlecase(Locale.getDefault())
+                            } else {
+                                it.toString()
+                            }
+                        }
                 }
             }
 
-        return label.capitalize(Locale.getDefault())
+        return label.replaceFirstChar {
+            if (it.isLowerCase()) {
+                it.titlecase(Locale.getDefault())
+            } else {
+                it.toString()
+            }
+        }
     }
 }

app/src/main/java/com/aurora/store/view/epoxy/views/DownloadView.kt

@@ -90,7 +90,13 @@ class DownloadView : RelativeLayout {
 
         B.txtStatus.text = download.status.name
             .lowercase(Locale.getDefault())
-            .capitalize(Locale.getDefault())
+            .replaceFirstChar {
+                if (it.isLowerCase()) {
+                    it.titlecase(Locale.getDefault())
+                } else {
+                    it.toString()
+                }
+            }
 
         B.txtSize.text = StringBuilder()
             .append(humanReadableByteValue(download.downloaded, true))

app/src/main/java/com/aurora/store/view/epoxy/views/details/InfoView.kt

@@ -64,7 +64,13 @@ class InfoView : RelativeLayout {
         B.txtTitle.text = info.key
             .replace("_", " ")
             .lowercase(Locale.getDefault())
-            .capitalize(Locale.getDefault())
+            .replaceFirstChar {
+                if (it.isLowerCase()) {
+                    it.titlecase(Locale.getDefault())
+                } else {
+                    it.toString()
+                }
+            }
         B.txtSubtitle.text = info.value
     }