chore: Update Go version in GVM readme to 1.23.3. (#93)

Update for Go 1.23.3

README.md

@@ -8,15 +8,15 @@ examples for common shells.
 
 bash:
 
-`eval "$(gvm 1.23.2)"`
+`eval "$(gvm 1.23.3)"`
 
 cmd.exe (for batch scripts `%i` should be substituted with `%%i`):
 
-`FOR /f "tokens=*" %i IN ('"gvm.exe" 1.23.2') DO %i`
+`FOR /f "tokens=*" %i IN ('"gvm.exe" 1.23.3') DO %i`
 
 powershell:
 
-`gvm --format=powershell 1.23.2 | Invoke-Expression`
+`gvm --format=powershell 1.23.3 | Invoke-Expression`
 
 gvm flags can be set via environment variables by setting `GVM_<flag>`. For
 example `--http-timeout` can be set via `GVM_HTTP_TIMEOUT=10m`.
@@ -36,7 +36,7 @@ Linux (amd64):
 # Linux Example (assumes ~/bin is in PATH).
 curl -sL -o ~/bin/gvm https://github.com/andrewkroh/gvm/releases/download/v0.5.2/gvm-linux-amd64
 chmod +x ~/bin/gvm
-eval "$(gvm 1.23.2)"
+eval "$(gvm 1.23.3)"
 go version
 ```
 
@@ -46,7 +46,7 @@ Linux (arm64):
 # Linux Example (assumes ~/bin is in PATH).
 curl -sL -o ~/bin/gvm https://github.com/andrewkroh/gvm/releases/download/v0.5.2/gvm-linux-arm64
 chmod +x ~/bin/gvm
-eval "$(gvm 1.23.2)"
+eval "$(gvm 1.23.3)"
 go version
 ```
 
@@ -56,7 +56,7 @@ macOS (universal):
 # macOS Example
 curl -sL -o /usr/local/bin/gvm https://github.com/andrewkroh/gvm/releases/download/v0.5.2/gvm-darwin-all
 chmod +x /usr/local/bin/gvm
-eval "$(gvm 1.23.2)"
+eval "$(gvm 1.23.3)"
 go version
 ```
 
@@ -65,13 +65,13 @@ Windows (PowerShell):
 ```
 [Net.ServicePointManager]::SecurityProtocol = "tls12"
 Invoke-WebRequest -URI https://github.com/andrewkroh/gvm/releases/download/v0.5.2/gvm-windows-amd64.exe -Outfile C:\Windows\System32\gvm.exe
-gvm --format=powershell 1.23.2 | Invoke-Expression
+gvm --format=powershell 1.23.3 | Invoke-Expression
 go version
 ```
 
 Fish Shell:
 
-Use `gvm` with fish shell by executing `gvm 1.23.2 | source` in lieu of using `eval`.
+Use `gvm` with fish shell by executing `gvm 1.23.3 | source` in lieu of using `eval`.
 
 For existing Go users: