Upgrade to Unity 2021.3.21 (#368)

* Upgrade to Unity 2021.3.21

* Update informational text

Assets/Resources/Sprites/UI/Common/Controllers/controllerSheet.png.meta

@@ -24,7 +24,7 @@ TextureImporter:
       213: 2557230542604182733
     second: nxJoyconL
   externalObjects: {}
-  serializedVersion: 11
+  serializedVersion: 12
   mipmaps:
     mipMapMode: 0
     enableMipMap: 0
@@ -45,6 +45,7 @@ TextureImporter:
   streamingMipmaps: 0
   streamingMipmapsPriority: 0
   vTOnly: 0
+  ignoreMasterTextureLimit: 0
   grayScaleToAlpha: 0
   generateCubemap: 6
   cubemapConvolution: 0
@@ -83,6 +84,7 @@ TextureImporter:
   textureFormatSet: 0
   ignorePngGamma: 0
   applyGammaDecoding: 0
+  cookieLightType: 1
   platformSettings:
   - serializedVersion: 3
     buildTarget: DefaultTexturePlatform
@@ -108,6 +110,18 @@ TextureImporter:
     overridden: 0
     androidETC2FallbackOverride: 0
     forceMaximumCompressionQuality_BC6H_BC7: 0
+  - serializedVersion: 3
+    buildTarget: Server
+    maxTextureSize: 2048
+    resizeAlgorithm: 0
+    textureFormat: -1
+    textureCompression: 1
+    compressionQuality: 50
+    crunchedCompression: 0
+    allowsAlphaSplitting: 0
+    overridden: 0
+    androidETC2FallbackOverride: 0
+    forceMaximumCompressionQuality_BC6H_BC7: 0
   spriteSheet:
     serializedVersion: 2
     sprites:
@@ -268,6 +282,14 @@ TextureImporter:
     edges: []
     weights: []
     secondaryTextures: []
+    nameFileIdTable:
+      nxJoyconL: 2557230542604182733
+      nxJoyconPair: 8903944674802394384
+      nxJoyconR: 9166690998051772148
+      nxProcon: 997315915213647506
+      pcKeyboard: 6680111460237765715
+      sonyDualShock: -8353205122300186910
+      sonyDualsense: -418123597310507147
   spritePackingTag: 
   pSDRemoveMatte: 0
   pSDShowRemoveMatteOption: 0