Bump envoy latest version to 1.38.3 (#519)

Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: codefromthecrypt <64215+codefromthecrypt@users.noreply.github.com>

Author: github-actions[bot]

USAGE.md

@@ -3,8 +3,8 @@ To run Envoy, execute `func-e run -c your_envoy_config.yaml`. This
 downloads and installs the latest version of Envoy for you.
 
 To list versions of Envoy you can use, execute `func-e versions -a`. To
-choose one, invoke `func-e use 1.38.2`. This installs into
-`$FUNC_E_DATA_HOME/envoy-versions/1.38.2`, if not already present. You may
+choose one, invoke `func-e use 1.38.3`. This installs into
+`$FUNC_E_DATA_HOME/envoy-versions/1.38.3`, if not already present. You may
 also use minor version, such as `func-e use 1.38`.
 
 `$ENVOY_PATH` runs a custom Envoy binary, skipping version

internal/cmd/testdata/func-e_help.txt

@@ -6,8 +6,8 @@ USAGE:
    downloads and installs the latest version of Envoy for you.
 
    To list versions of Envoy you can use, execute `func-e versions -a`. To
-   choose one, invoke `func-e use 1.38.2`. This installs into
-   `$FUNC_E_DATA_HOME/envoy-versions/1.38.2`, if not already present. You may
+   choose one, invoke `func-e use 1.38.3`. This installs into
+   `$FUNC_E_DATA_HOME/envoy-versions/1.38.3`, if not already present. You may
    also use minor version, such as `func-e use 1.38`.
 
    `$ENVOY_PATH` runs a custom Envoy binary, skipping version

internal/cmd/testdata/func-e_use_help.txt

@@ -15,5 +15,5 @@ DESCRIPTION:
    depending on which is present.
 
    Example:
-   $ func-e use 1.38.2
+   $ func-e use 1.38.3
    $ func-e use 1.38

internal/version/last_known_envoy.txt

@@ -1 +1 @@
-1.38.2
+1.38.3

packaging/nfpm/func-e.8

@@ -28,8 +28,8 @@ To run Envoy, execute `func-e run -c your_envoy_config.yaml`. This
 downloads and installs the latest version of Envoy for you.
 
 To list versions of Envoy you can use, execute `func-e versions -a`. To
-choose one, invoke `func-e use 1.38.2`. This installs into
-`$FUNC_E_DATA_HOME/envoy-versions/1.38.2`, if not already present. You may
+choose one, invoke `func-e use 1.38.3`. This installs into
+`$FUNC_E_DATA_HOME/envoy-versions/1.38.3`, if not already present. You may
 also use minor version, such as `func-e use 1.38`.
 
 `$ENVOY_PATH` runs a custom Envoy binary, skipping version