feat(cdk): update tsconfig to more modern settings in typescript init templates (#31927)

### Issue # (if applicable)

n/A

### Reason for this change

I think contents of `tsconfig.json` are a little outdated and seemed to need update.


### Description of changes


The following two changes I made:

1. Removed unnecessary options
2. Updated `target` and `lib` options at compilerOptions

#### 1. Removed unnecessary options

Unnecessary options included in the `compilerOptions` of tsconfig.json.   
The unnecessary options are as follows

- noImplicitAny
- strictNullChecks
- noImplicitThis
- alwaysStrict


If `strict: true` is specified in compilerOptions, these options will also be `true`, so there is no need to specify them.

see: https://www.typescriptlang.org/tsconfig/#strict


#### 2. Updated `target` and `lib` options at compilerOptions

- target
  - I think 'ES2023' is more appropriate for the target option at this point.
- lib
  - Basically, it doesn't seem necessary to specify the same value for the lib option as the target specified in the target option.
  - see: https://www.typescriptlang.org/tsconfig/#lib


### Description of how you validated changes



### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: ren-yamanashi

packages/aws-cdk/lib/init-templates/app/typescript/tsconfig.json

@@ -1,17 +1,13 @@
 {
   "compilerOptions": {
-    "target": "ES2020",
+    "target": "ES2022",
     "module": "commonjs",
     "lib": [
-      "es2020",
+      "ES2023",
       "dom"
     ],
     "declaration": true,
     "strict": true,
-    "noImplicitAny": true,
-    "strictNullChecks": true,
-    "noImplicitThis": true,
-    "alwaysStrict": true,
     "noUnusedLocals": false,
     "noUnusedParameters": false,
     "noImplicitReturns": true,

packages/aws-cdk/lib/init-templates/sample-app/typescript/tsconfig.json

@@ -1,17 +1,13 @@
 {
   "compilerOptions": {
-    "target": "ES2020",
+    "target": "ES2022",
     "module": "commonjs",
     "lib": [
-      "es2020",
+      "ES2023",
       "dom"
     ],
     "declaration": true,
     "strict": true,
-    "noImplicitAny": true,
-    "strictNullChecks": true,
-    "noImplicitThis": true,
-    "alwaysStrict": true,
     "noUnusedLocals": false,
     "noUnusedParameters": false,
     "noImplicitReturns": true,