fix: use #!/usr/bin/env bash as shebang instead of #!/bin/bash

This will fix running these scripts on distros without /bin/bash, but
where bash is in $PATH, such as NixOS.

Currently, `make fmt` otherwise fails to run:

```
make[3]: Leaving directory '/home/flokli/dev/numtide/manifoldfinance/talos'
sh: ./hack/fix-artifacts.sh: /bin/bash: bad interpreter: No such file or directory
make[2]: *** [Makefile:163: local-fmt-protobuf] Error 126
make[2]: Leaving directory '/home/flokli/dev/numtide/manifoldfinance/talos'
make[1]: *** [Makefile:274: fmt-protobuf] Error 2
make[1]: Leaving directory '/home/flokli/dev/numtide/manifoldfinance/talos'
make: *** [Makefile:277: fmt] Error 2
```

Signed-off-by: Florian Klink <flokli@flokli.de>
Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>

hack/cloud-image-uploader.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

hack/fix-artifacts.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 for platform in $(tr "," "\n" <<< "${PLATFORM}"); do
     echo ${platform}

hack/release.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

hack/start-registry-proxies.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Sync changes with configuring-pull-through-cache.md.
 

hack/test/e2e-aws.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -eou pipefail
 

hack/test/e2e-azure.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -eou pipefail
 

hack/test/e2e-capi.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -eou pipefail
 

hack/test/e2e-docker.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -eou pipefail
 

hack/test/e2e-gcp.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -eou pipefail
 

hack/test/e2e-iso.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -eoux pipefail
 

hack/test/e2e-qemu.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -eou pipefail
 

hack/test/libvirt/libvirt.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

hack/test/provision-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -eoux pipefail
 

hack/test/qemu/qemu.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e