chore(deps): upgrade dependencies for this repo only (#325)

This PR upgrades dependencies used by this repo
(`cdktf-repository-manager`) to their latest version based on the
version range specified in the `package.json` file.
For reference, here is the output from `yarn outdated` prior to running
`yarn upgrade` which was used to produce this PR:

```
yarn outdated v1.22.22
info Color legend : 
 "<red>"    : Major Update backward-incompatible updates 
 "<yellow>" : Minor Update backward-compatible features 
 "<green>"  : Patch Update backward-compatible bug fixes
Package                          Current  Wanted   Latest Package Type    URL                                                                               
@types/node                      18.19.50 18.19.54 22.7.4 devDependencies https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/node         
@typescript-eslint/eslint-plugin 6.21.0   6.21.0   8.7.0  devDependencies https://typescript-eslint.io/packages/eslint-plugin                               
@typescript-eslint/parser        6.21.0   6.21.0   8.7.0  devDependencies https://typescript-eslint.io/packages/parser                                      
cdktf                            0.20.8   0.20.9   0.20.9 dependencies    https://github.com/hashicorp/terraform-cdk                                        
cdktf-cli                        0.20.8   0.20.9   0.20.9 dependencies    https://github.com/hashicorp/terraform-cdk#readme                                 
change-case                      4.1.2    4.1.2    5.4.4  dependencies    https://github.com/blakeembrey/change-case/tree/master/packages/change-case#readme
eslint                           8.57.1   8.57.1   9.11.1 devDependencies https://eslint.org                                                                
typescript                       5.3.3    5.3.3    5.6.2  devDependencies https://www.typescriptlang.org/                                                   
Done in 0.91s.
```

Note that this auto-update process only stays within specified version
ranges (typically minor or patch). If you want to upgrade to newer
versions beyond those, you will need to manually check out this
repository and run the command `yarn upgrade [package] --latest`.

For future reference: the reason why we're not using Dependabot for this
is because this repo has a tendency to run into rate limits, and
Dependabot produces so many PRs and workflow runs that it'd be likely to
hit those limits quickly.

Signed-off-by: team-tf-cdk <[email protected]>