Impersonate Firefox 98

Add support for impersonating Firefox 98 released a few days ago. It has
the same TLS signature as Firefox 95 so the adaptation includes changing
the user-agent only. Upgrade the NSS version used to 3.75, even though
it's not strictly necessary.

firefox/patches/curl-impersonate.patch

@@ -80,7 +80,7 @@ index 2dbfb26b5..e0bf86169 100644
   * NAME curl_easy_getinfo()
   *
 diff --git a/lib/easy.c b/lib/easy.c
-index 20293a710..1a4d52d2f 100644
+index 20293a710..b97ac204e 100644
 --- a/lib/easy.c
 +++ b/lib/easy.c
 @@ -80,6 +80,7 @@
@@ -91,7 +91,7 @@ index 20293a710..1a4d52d2f 100644
  
  /* The last 3 #include files should be in this order */
  #include "curl_printf.h"
-@@ -282,6 +283,162 @@ void curl_global_cleanup(void)
+@@ -282,6 +283,197 @@ void curl_global_cleanup(void)
    init_flags  = 0;
  }
  
@@ -180,6 +180,41 @@ index 20293a710..1a4d52d2f 100644
 +      "Sec-Fetch-User: ?1",
 +      "TE: Trailers"
 +    }
++  },
++  {
++    .target = "ff98",
++    .httpversion = CURL_HTTP_VERSION_2_0,
++    .ssl_version = CURL_SSLVERSION_TLSv1_2 | CURL_SSLVERSION_MAX_DEFAULT,
++    .ciphers =
++      "aes_128_gcm_sha_256,"
++      "chacha20_poly1305_sha_256,"
++      "aes_256_gcm_sha_384,"
++      "ecdhe_ecdsa_aes_128_gcm_sha_256,"
++      "ecdhe_rsa_aes_128_gcm_sha_256,"
++      "ecdhe_ecdsa_chacha20_poly1305_sha_256,"
++      "ecdhe_rsa_chacha20_poly1305_sha_256,"
++      "ecdhe_ecdsa_aes_256_gcm_sha_384,"
++      "ecdhe_rsa_aes_256_gcm_sha_384,"
++      "ecdhe_ecdsa_aes_256_sha,"
++      "ecdhe_ecdsa_aes_128_sha,"
++      "ecdhe_rsa_aes_128_sha,"
++      "ecdhe_rsa_aes_256_sha,"
++      "rsa_aes_128_gcm_sha_256,"
++      "rsa_aes_256_gcm_sha_384,"
++      "rsa_aes_128_sha,"
++      "rsa_aes_256_sha",
++    .http_headers = {
++      "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:98.0) Gecko/20100101 Firefox/98.0",
++      "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
++      "Accept-Language: en-US,en;q=0.5",
++      "Accept-Encoding: gzip, deflate, br",
++      "Upgrade-Insecure-Requests: 1",
++      "Sec-Fetch-Dest: document",
++      "Sec-Fetch-Mode: navigate",
++      "Sec-Fetch-Site: none",
++      "Sec-Fetch-User: ?1",
++      "TE: Trailers"
++    }
 +  }
 +};
 +
@@ -254,7 +289,7 @@ index 20293a710..1a4d52d2f 100644
  /*
   * curl_easy_init() is the external interface to alloc, setup and init an
   * easy handle that is returned. If anything goes wrong, NULL is returned.
-@@ -290,6 +447,7 @@ struct Curl_easy *curl_easy_init(void)
+@@ -290,6 +482,7 @@ struct Curl_easy *curl_easy_init(void)
  {
    CURLcode result;
    struct Curl_easy *data;
@@ -262,7 +297,7 @@ index 20293a710..1a4d52d2f 100644
  
    /* Make sure we inited the global SSL stuff */
    if(!initialized) {
-@@ -308,6 +466,22 @@ struct Curl_easy *curl_easy_init(void)
+@@ -308,6 +501,22 @@ struct Curl_easy *curl_easy_init(void)
      return NULL;
    }
  
@@ -285,7 +320,7 @@ index 20293a710..1a4d52d2f 100644
    return data;
  }
  
-@@ -878,6 +1052,13 @@ struct Curl_easy *curl_easy_duphandle(struct Curl_easy *data)
+@@ -878,6 +1087,13 @@ struct Curl_easy *curl_easy_duphandle(struct Curl_easy *data)
      outcurl->state.referer_alloc = TRUE;
    }